Crawdad (baby freshwater lobster-like crustacean). Pulled by fishing line across the aisle at work when the ditzy female blonde manager walked up the aisle.

I think she went home to change her underwear.

Was mad a bf one time (won't disclose why)...he came over drunk and prominently passed out before I even got to bed. So I painted his fingernails pink. He went to work before he noticed them.

Did the same thing to Ditchboy.... only it was his toenails I painted.

The ex husband used to get drunk and act like a jerk when we were out...on the way home he'd pass out in the passenger seat and I'd take every left turn I could...fast... his head would hit the side window...he always thought it was the whiskey that caused his headaches.

One thing I haven't been able to do yet, but will someday.... is to pull up in front of a parked car at night - must have it'* headlights on... must have a sleeping passenger in the seat next to you... starting yelling as you grip the wheel... imagine waking up to see headlights...

dont ever drink and pass out with tracy!!

I LOVE IT!!!!!

Did that one to my mother a few years back, on;y it was an 18 wheeler

what'* even better (improving on Tracy'* idea) is where the passenger is asleep and aware that he/she is on the highway. Look for a tow truck towing a truck or semi etc...car will work too but it has be towed by the rear wheels and just make some distance between you guys then FLOOR it and start screaming "WE'RE GOING TO DIE!" and proceed to laugh at your passenger

I saw that in a movie once

This one is kinda dumb, but was hilarious when I did it. Considering the spray hoozle for the kitchen sink is black, and I have many rolls of black electrical tape.... I taped the button down on the hoozle. Waited for TWO hours before my wife finally turned the faucet it on. It was soooo funny to see her expression while getting hoozled.

Suggested Prank deleted by Mod due to potential personal injury and property damage.
Sorry...but that is not a very "practical" joke...practical jokes are not intended to hurt people or property.

back in the day... well about 6 yrs ago now.. my boss freaking hates bugs.. and we found this realy big ugly bug... i dont know what it was but it was about 4 inches long and about 1/2 in round. well every morn the office ppl would bring in dougnutsfor him!!
hmmmmmmmmm well we put the bug in the doughnut box.. you could hear him screaming 100 feet away.. needless to say we ended up working 12 hrs a day 6 days a week for the next 2 weeks cause of that one.. (his sort of payback)