A line of about 2 or 3 people waiting to have sex with a female in the room. The term is used when there is not enough people to be considered a train.
"This girl is really trying to have this train happen, let's go"
"But there's only 3 of us, it's not much of a train"
"Guess we'll just run a short bus"
"But there's only 3 of us, it's not much of a train"
"Guess we'll just run a short bus"
by Man E April 14, 2018
Get the short busmug. by Ranissa June 27, 2006
Get the short busmug. by dave February 27, 2003
Get the short busmug. a drink made when you pour half a beer into a cup, next you add a splash of orange juice. finally you drop a shot of amaretto and chug. surely to get you messed up quickly.
by randaroo6722 April 2, 2008
Get the short busmug. 
Similar to the shocker and mini van, but with the SHORT BUS 1 finger goes in the the woman's vagina and the other 2 fingers of that hand as well as the complete other hand go in the butt (1 driver 7 passengers) causing them to yell, moan and even walk a little bit handicapped
My girlfriend was acting really silly so later that night I gave her the short bus made her walk funny in a special way
by Wiggly21 April 12, 2014
Get the Short busmug.