1 definition by Ivan J

Top Definition
SIF means "Seat In Front."
It's a term used by unicycle riders to describe a way of doing a trick with the seat in front of you rather then the seat under your butt.
Example: "If you do the hop SIF, you can get more height."
by Ivan J October 28, 2005

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug