Floss flagging is when a human claims to be in a gang but it's really not in that gang. One can also floss Flag by being in a gang but claiming they are from another gang.
Results in floss flagging can be dangerous
Yo what's up home boy, I heard you was a Crip now!!
"Yeah you know I'm down with the gang"
(Does not know anything about that gang not even the color.
Floss Flagging