2. A term which is said during a flick of your middle finger and anothers middle finger usually signaling the confirmation of brotherhood and/or friendship.
1.Me: Yo Chammy should I bang that twat over there.
Chammy: Foshoski bro
An addictive phrase used to express affirmation. Derived from the term "fo sho", which is derived from the term "for sure", it is believed to have roots in Detroit, Michigan as well as Australia. Once you start saying it, you (embarrassingly) can't stop.