SIBO - Sexually Inappropriate Behaviour Order. Refers to the type of person or persons we all know who acts in a sexually innappropriate manner towards others. Like an ASBO (see ASBO definition) but slapped on people who make a nuisance of themselves by grabbing bums, tits etc. Can also be handed out for spreading ludicrous gossip of a sexual nature
e.g. 1 'Sadie, im slapping another SIBO on you cos you keep on stroking my thigh and im trying to eat this curry!'

e.g. 2 'i heard that Danny got very comfy with Semui's trouser sanke last night in the toilets of the social club'
by Gribbler June 03, 2005
1 more definition
Top Definition
A guy who's kinda annoying and confusing, but kinda sweet at the same time.
Girl: So u like me?
Sibo: Well that depends.. do u want me to want u to want me to like u?
by dani california * January 17, 2009

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