Top Definition
Abbreviation of If I Say So Myself. Sometimes spelled as IFISSMS, but myself is one word.
That's pretty friggin' awesome, IFISSM.
by whoeverwhatdoesitmatter December 12, 2007
5 Words related to IFISSM

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.