When you vomit on the back of the head of the person in front of you, and he in turn vomits, as does the person in front of him (ad infintum) thus creating a 'domino-like' effect.
"I was standing in line for assembly when all of a sudden I was sick all over the back of the boy in front of me. He was then sick and it started a whole chain reaction rather like dominoes... Vominoes!"

"...The last one had a kind of double kick. Came straight out of his nostrils, over the shoulders of the boy in front, thus breaking the chain!"
by PseudoWood June 17, 2009
Get the Vominoes mug.
When the sight and/or sound of a person vomiting causes others around him to vomit as well. A vomit domino effect.
The mere sight of Eddie vomiting on the water taxi caused a vomino effect among several other passengers.
by pass the bucket January 13, 2012
Get the vomino effect mug.
When someone vomits so powerfully, it makes other around them vomit also
Davo: I just had a vom vom
Stevo: I know, it made me vom vom.
Davo: Yep, that's the Vomino Effect.
by 3600 NIBOR October 11, 2010
Get the The Vomino Effect mug.