1 definition by superpersoniscool

Top Definition
1) yiyf is a short version of letters combined. it means yoda is your father.

2) yiyf is also a short version of letters combined that mean yes it's your fault.
1) person 1 texts "who is your daddy?"
person 2 texts "yiyf"

2) person one texts "it isn't your fault"
Person two texts "yiyf"
by superpersoniscool October 01, 2010

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