It's something to do with crabs
And, at the moment, their cranial placement.

( Tribs Buy things! http://www.quizzicaldinosaur.co.uk/, Thu 10 Jan 2008, 4:51, archived)

CRABS SEX HEADS. FOUR TEN, GO GO GO.

( Ttssattsr MILA KUNIS IS MINE., Thu 10 Jan 2008, 4:57, archived)

FUCK YEAH BITCH

( Rapitinui kick it out of me gently, Thu 10 Jan 2008, 5:03, archived)

If the _____ fits . . . wear it !

( Valin . . . Asleep at the Dream . . ., Thu 10 Jan 2008, 5:14, archived)