"Knocked the F*ck Out" Trading Card

"Knocked the F*ck Out," sometimes referred to as "KFO," was a trading card game that was quite popular just prior to the collapse. A very rare card is the self-titled "Knocked the F*ck Out" single card, and somehow even in the post-apocalyptic world, still carries some intrinsic value. An extremely common card is entitled "Massive Agenda."

The value of the cards depends on their rarity, which can be either Common, Uncommon, Rare, or Ultra-rare.

Collector noticing you are in possession of one such card: "You got knocked the f*ck out, man!"