Who lives in a pineapple under the sea? SpongeBob Squarepants!! Absorbent and yellow and VIOLENT is he? SpongeBob Squarepants' ... impersonator!
TMZ obtained CRAZY video of a dude in a SpongeBob costume picking a fight with two women on Hollywood Boulevard Tuesday ... and getting his porous ASS KICKED.
Cops were flagged down and Spongie was detained -- but he was eventually released because nobody wanted to press charges.