Top Definition
In my book. Similair to IMO and IMHO.
Startled and Surprised are two different feelings imb.
by Cliet July 17, 2006
"i'm back", normally used after brb
ack: brb
dudley: k, l8r
ack: imb
by dudley December 06, 2003
"Indian Mound Boys"
The boys that live in the Indian Mound neighborhood in Islamorada. They party all the time, play sports, are BEST FRIENDS, and claim to be badass.

PL, Patrick Naughton, The Angel boys, William Bassett, TJ Sabalka, Travis Sebastian, Eckbloms, Tyler G, Mikey Hampson, There are more..
"Hey Shelly what'd you do friday night?"
"I partied with the IMB!"
by coreyshmoreys April 15, 2009
It's my birthday. IMB every year on 2nd September
When IMB, if there is a party people sing Happy Birthday to You to me.
by Criostoir Hulme September 02, 2005
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