Rooster Tailin 

When one puts their face in another person's buttocks and moves their face back and forth while making a motor boat sound with their mouth by blowing air and making their lips flap. similar to motorboating but for the rear end.

"Last night i took it to the next level with liz, i rooster tailed her and she went wild"
"take that shot and lets go out rooster tailin!"

Rooster Tailin by Dr. Frankenschmingle May 20, 2009

Rooster Tailing 

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!

Rooster Tailing by window shopper November 5, 2009

Rooster tailing 

When someone farts and walks around rooster tailing the smell behind them.

Man johnny farted and he's rooster tailing it through the whole office.

Rooster tailing by jc26 June 11, 2019

Roster tailing 

When you are pooping and vomiting simultaneously

Man, every time I eat at Chipotle I end up roster tailing

Roster tailing by Rooster master January 30, 2017