The suite life of zack and cody. need some help??!

Question:

The suite life of zack and cody. need some help??

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in the episode "super twins", when zack and cody reveal their costumes, cody is "brain man".

on his costume are the letters "BM" standing for brain man. but then, mr. moseby and arwin and zack start laughing at that. then cody says "why didn't you tell me before?"

i didn't get it. what's with BM? does it stand for something else? idk please help?

its like all i've been thinking about.

thank u guys in advance. lol

Additional Details

5 hours ago
and why would it be funny?

Answers: 5 hours ago
and why would it be funny? bowel movement.
aka poop. BM also stands for bowl movement It also stands for bowel movement...which is funnier to 12 year old boys. I think it is Brain Man

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