1) an ugly girl that a male either befriends or courts romantically to increase his chances of scoring with her hot friend.

2) an inattractive person that is used to help attractive people score.
this girl i am seeing right now is a step stool. I really want to score with her hot best friend.
by Whiteknight January 18, 2004
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noun: A person who becomes a rebound and is kept around until someone better is found.
I can't be single and don't wanna deal with the pain of a break-up so I'm gonna find someone to be my step stool.
by Lez-be honest January 11, 2017
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a jacobs step stool is a jacobs ladder but for a small penis
did you hear what i was just told my friend told me her man went to get a jacobs ladder but when the guys at the shop seen his penis they just laughed and said its too small for a jacobs ladder to be put on so they gave him a jacobs step stool instead
by ODog N Cali M.C N T April 2, 2009
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