this is a shorter term for "Flap Of Skin". a flap of skin is someone in your group of friends whom you may consider the "loser" or the person who you only hang around with for a certain reason, that reason not perticulary meaning you enjoy their company.
it could also mean someone with NO private parts.
it could also mean someone with NO private parts.
" Kris has no vagina"
"She is but a Flap Of Skin!"
"I couldn't concentrate when the FOS was talking to me, she annoys me to much."
"She is but a Flap Of Skin!"
"I couldn't concentrate when the FOS was talking to me, she annoys me to much."
by i heart flap of skin July 12, 2009
An acronym that stands for: Full of Shit. pronounced "Faas"(long a sound), used do descirbe a statment from someone who is a habitual liar or bullshitter
by Apoo7 December 11, 2008
"OMG, that girl I took home last night had a severe case of FOS. I had to fake vomiting and get out of there fast."
by happynoj March 17, 2010
Friend Over Shoulder
the person (friend or acquaintance) who is always just around when you are having a conversation
the person (friend or acquaintance) who is always just around when you are having a conversation
"Shh...he might hear you!"
"Are you kidding?! The FOS doesn't know what the fuck is going on in this world"
"Are you kidding?! The FOS doesn't know what the fuck is going on in this world"
by smoke weed every day January 04, 2009
meaning varies according to situation. yeah, it doesn't make sense, but at least 2 or 3 people I know have used it.
by bastardface October 21, 2004
Friend 1: Wya
Friend 2: Wendy's
Friend 1: Can you get me the fo fo fo?
Friend 2: Wut
Friend 1: FO FO FO
Friend 2: Wendy's
Friend 1: Can you get me the fo fo fo?
Friend 2: Wut
Friend 1: FO FO FO
by yohomegirlwendy August 05, 2018