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2.
It is a sexual act, involving at least 6 people for best results. The ideal's would be to get 3 beds, 3 girls bent over on the beds and 3 guys taking them from behind... using an egg timer each guy gets 3 minutes with the girl, after said time everyone switches around which is known as the round robin...
A: How did you and dave get on with those 2 girls last night?

B: Oh man, it was crazy we went back to their flat, and had some round robin action with their roommates...!
by iKielo1 January 30, 2009
 
1.
Coming from the show "Buffy the Vampire Slayer"; the act of two or more teenagers deciding to go out together, be it on a date or to a party and/or somewhere else that they can't be found going, and then telling their parents that they are going to each other's houses as an alibi.
So we'll pull the round robin tonight?
by Laine February 08, 2004
 
3.
petition passed round for signature
This has nothing to do with the bird. Robin in this expression is a corruption of the French ruban, meaning 'ribbon'.In 17th and 18th century France, there was a good deal for the average peasant to complain about, but complaining to the King in particular was not a good idea. The monarch's usual reaction to a petition from his subjects was to seize the first two or three signers and have them beheaded. Not wishing to lose their heads, but bent nonetheless on petitioning for justice, clever peasants came up with the expedient of signing their names on the petition in a circle, like a ribbon. That way, no one's name came first, and, assuming that there were hundreds of signatures on the petition, it was impractical for the King to punish all the signers. A similar method was adopted by disgruntled sailor in the 18th century British Royal Navy, another institution not known for welcoming criticism. Sailors often signed their names to a petition like the spokes of a wheel, so that no one of them could be considered the leader of a mutiny and hanged.
by Pdawg September 17, 2003
 
4.
when a pair or more of friends tell their parents that they are sleeping over at each others houses and then do something entirely different
Kathy: Hey I wanted to see Rick this Saturday didn't you say you wanted to see Devan?
Sarah: Yeah I did say that. What're you thinking?
Kathy: I'll tell my mom I'm over your place, you tell yours you're at my house.
Sarah: Round robin?
Kathy: Exactly.
by anonymous74 August 17, 2013
 
5.
More well known as Double penetration (DP) Round Robin is a sexual act of simultaneous penetration of both anus and vagina. It is also sometimes called a sandwich.
We had a round robin last night.
by matty boy who likes teh pie March 22, 2006
 
6.
1. A sexual act which entails a person becoming dizzy (by any means) and then defacating on their partner's body.
Matt didn't know that giving Paul a round robin would be so messy.
by Sir Shits-A-Lot August 12, 2003