Polari makes a good point.
Also can a sponge fuck a squirrel?(the only female on the show I saw)
Only time will tell.
Well, if his dick is a sponge, he can make it into any shape that matters to the squirrel. He just has to mold it and then let it dry out so it gets really hard.
But won't it shrink once it dries out?
Size does not matter. My ancestry is irish and french, and I do marvelous things with my modest penis. And besides, if SpongeBob were insecure, he could just wad up an extra bit of sponge to compensate when forming his penis(es).