The act of standing astraddle over another person who is laying on the floor while you pour a beer or other clear beverage down your ass crack, thus allowing it to cascade rustily down into the other person's open mouth.
by myretardedlittlebrother December 11, 2011
After a sporting event; when your teammate is washing his hair and his eyes are closed, someone sneaks up behind him and checks his oil with their thumb (quickly slips a thumb in his ass), then runs off before he is able to rinse the soap away and identify the clandestine violator
After the game someone gave John a rusty ninja. John was attacked by a rusty ninja after the game. Be careful, there's a rusty ninja in there.
by sandy_x November 27, 2012
Mike: "Hey Ted, that hooker only charged me 30 dollars for a rusty hutcho last night!"
Ted: "Thats awesome man, where'd you pick her up?"
Ted: "Thats awesome man, where'd you pick her up?"
by rickastley June 08, 2012
When a girl is licking your ass and you realize that you didn't wipe completely when taking a crap earlier in the day.
She was licking my ass and I gave her the ol' rusty bottlecap. She didn't like it, but she kept going. What a trooper!
by 6BallsAndASplit November 05, 2009
The Female version of a Rusty Trombone which involves a female getting rimmed while a vibrator is inserted into her vagina mimicking the vibrations of a motorcycle. It is also customary for the giver to push his or her lips together and make motorcycle noises into her anus.
by Batfastard February 11, 2010
When you do analingus while inserting your finger (or appropriate probe-like device) into her menstruating vagina.
by rustytomato March 18, 2016
girl 1: girl, how'd you get that rash on your leg?
girl 2: Oh this old thing? I was showering last night and my boyfriend gave me a rusty leg.
girl 2: Oh this old thing? I was showering last night and my boyfriend gave me a rusty leg.
by gogojuke May 30, 2017