Top Definition
meaning laugh my ickle bum bum off this is because i am not allowed to swear so i use this because lmao is swearing
IM person:hahah lmao
me:no my mum is hear so you will have to say lmibbo
IM person:what does that mean?
me:laugh my ickle bum bum off
IM person:thats strange
by doodlbug February 14, 2007
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