Top definition
An exclamation of pure joy. Originates from Hespeler/Cambridge, Ontario. Usually followed by some form of motherfucker.

Alternate spelling: siqq titties (usually used when speaking on MSN)
Rachel: I just picked up a half quad!
Hannah: Sick titties!

OR

Rachel: I got us some triple stacked red Batmans!
Hannah: SICK TITTIES MUTHAFUCKA!
by Kacheldhfsdhfksjfd October 28, 2007
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May 3 Word of the Day
Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)
Monica: Oh yay! I made a new mutual today because we started following & talking to eachother on twitter and we like eachother (so it seems).
by qtheresurrection March 25, 2015
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2
when something is better then sick... think titties... those are always good
1-dude look at that car!
2-whoa! sick titty
by gunzoid November 28, 2006
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