This is apractical joke where you would take a crap, then take the turd and place it on a friends or enemy's car anttena.Making sure to leaving enough room for a little of the antenna to be above the turd. Best when done in cold months that it can actually form and stay on the antenna.
When a man is having rapid intercourse with a woman and another man sticks his dick to the first mans dick (side) and the force from the first dick pulls the second dick into the woman along with it.
Harry: Last night I went into Dave's room while he was fucking his girlfriend and I started shirt tailing myself in.
Dave: Yea dude, what was up with that?
Harry: You shouldn't have left an opening.
When someone forgets to scrub the toilet with a toilet brush after taking a gigantic dump, showing a trail of shit spiraling down the toilet bowl as it was flushed down.
Dave: Dude I think I'm gonna switch dorms, I can't live with these guys anymore
Chris: Why's that?
Dave: Dude because they use the toilet and keep rooster tailing, it's disgusting
Martin: Dude I swear if he rooster tails in my toilet one more time I'm gonna kick his fucking teeth out!
When an ambulance passes by and traffic moves off the road, so one takes the opportunity of an open roadway to (illegally) pass some people right behind the ambulance. Basically, you drive right behind the ambulance so that you can pass everyone just like them.