Dunno if any1 reads the Battle.net forums, but this thread is probably the most epic one about sc2:
http://forums.battle.net/thread.html?topicId=23425374601&sid=5000&pageNo=1Few of the best:
Yo Mommaship so fat I didn't need Force Fields to block your Zealots.
Yo Mommaship's so fat she cloaks your main AND your expansion.
Yo Mommaship so fat she takes an extra 40 seconds to warp in.
Fav: Yo Mommaship so fat she thought feedback was takeout.
Post has been edited 1 time(s), last time on Mar 2 2010, 7:19 am by LoTu)S.
None.

We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch
Here's one that I read somewhere else:
(not sc2)Yo Mommaship
(mom actually) so fat she takes 2 Arbiters to be recalled.
My favorites from the battle.net topic:
Yo mommaship so ugly they had to add a confirmation box to Mass Recall.Yo mommaship so fat her food cost has increased from 6 to 8.
None.