A weight hose clamped onto a guys driveshaft,,, or an extra good sized wheel weight tapped onto the inside front wheel.

When I worked in California there was a mechanic who ranted about the mileage he was getting out of his car. My friend was putting a few gallons into the tank. After about 2 weeks of this he started to syphon a few gallons out. Drove the guy crazy!

Also was a guy who drove a LeCar. He was talking about it all the time. His name was Joe. When the uniform rep came in my friend had them change his name on the shirts to Le Joe.

A guy I worked with had some good ones. His favorite was to drill and put a grease nipple in the exhaust just a head of the cat and then pump a couple of shots of grease it every day till the guy found out why his car was smoking so bad.
Another is to put a plastic tie wrap on the drive axle or drive shaft.

Buddy of mine used to light off a smokebomb under the car after after one of the new techs did a engine overhaul or re/re. About 30 seconds after he fired it up.

i had to hide around the corner so i wouldent give the prank away as im laughing at the guy as he is freaking out.

m.youtube.com/watch%2Fwatch%3Fv%3DCgZTVkjQwto#

one of my buddies worked with a dude who was an electrical genius . he rigged up a device that would go inside the roof top interior light . when you got in your car an the dome light came on , it started a timer , that triggered a lil device that would ignite a fire cracker fuse
so you get in your car , get your belt on , get it in gear . BANG .
one of the managers at the shop I used to work at was a real real di ck head . he used to wash his car inside the shop just before close , then the tire guy would have the eggstra mess to clean up .
he had a Pontiac 6000 wagon , I tell the tire jack up right rear , get in it start it up , stand on the brakes hard as you can , then I clamped a small pair of vise grips on the right rear brake hose . we let it down an waited , guy comes out gets in it to leave , back tire skidding across floor , he cant believe . I,m like holy sh it batman , that's gonna be a problem . he goes back in office . I tell tire guy jack it up take off wheel pound the hellout the frame or work bench for a while , take the clamp off an tell him we fixed it . moron never figgered it out . the other manager at same shop , banged eggstar weights in side right rear tire of his pick up had him conviced the axle was bent . ha ha .
600 wagon guy was telling every one he was gonna take wife an son for a week end trip . in the shop bath room we had a centre fold kinda pickture of some ugly red head gonna gulp a foot long dick , with this evil grin on her face . I got in his car an taped the pic to the inside of passenger sun visor , then taped a small weight to it so when you flipped the visor down , down flops the pic right in frt of the passenger . his old lady was a right old war hag an she hated him , so I figgered this outta be good . welp Monday comes , he comes in an he,s pis sed , apparently his son wanted to sit up frt with daddy an momma sat in the back . the car turns into the sun , driver flips down his visor , son reaches up flips down visor an says hey daddy look , dad almost crashes trying to get pic down an wouldn,t you know it war hag was right behind the kid , and was convinced that the pic belonged to her husband , then they fought the rest of the weekend .
just a few of many ..77.

Edit

-- Edited by Gearhead on Thursday 20th of February 2014 08:48:55 AM

I put a like 2 foot long fresh caught salmon on the intake manifold of a buddy,s 74 chev impala with a small block in , didn,t make it go any faster , but he loaned the car to his sister that week end , it leaked a bit of oil so she pulled into a gas station an asked to have the oil checked . they thought it was some kinda stoopid prank an yelled at her an told her to get outta there before they called the cops . so she calls him up . he comes to see the car , opens the hood , Monday morning he told us the first thing he thot was , the Phukin Doug . ha ha and he was right ha ha ..77.

Rocketman wrote:

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Some guys at work Jacked a guys car up and put a couple of blocks under the rear axle then lowered the car. The rear wheels were just off the ground. Took him ages to figure out why his car ran and went in gear but wouldn't move. Thought his trans was shot. LOL.

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When I went to trade school for automotive tech there was I guy in the class who always did it better faster . His jobs were more difficult blah, blah...

We all got tired of this real fast so we pulled the same prank, he got real mad, then settled down after that. I guess he learned his lesson.

 

We had a guy at work stuff a pair of panties under the seat of a fellow employees car. We use a lot of rags and quite often buy them from the sally ann. You never know what you are getting in a bag and that is where they were found. So one guy thought it would be funny and get the other guy in crap with his wife. Well she found them over the weekend and it created a huge problem. The guy that pranked his co-worker had some serious apologizing to do..as everyone watched on.