1. To make a sexual advance on a girl; the universal justification for getting some; to ask a girl to go down on you
2. To incite or encourage one to do something, usually something stupid or embarresing
3. To persuade someone to agree with you
4. Bastardisation of 'come on'.
Scenario 1:
*Whips out cock in Cinema*
Dude: Ceem en! Wax it!
Scenario 2:
Dude: I really don't think I should jump off that cliff man...
Man: Ceem een Timme! It'll be funny! Doo itt
Scenario 3:
Dude: Ah, I dunno...
Guy: Ceem een.
by Blackstump November 16, 2003
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