When an individual attempts at giving another party a "high five"
and the receiving party reciprocates by flicking the hand of the "high fiver" with their middle finger symbolizing an allegory for sex.
Random stoner: "Hey bro high five"
Even more stoned random stoner: (flick)
Random stoner: "Bruh i fell sexually harassed in soo many ways"
Even more stoned random stoner: "Bitch you just got Arrow Headed"