noun, when one person is perceived to do something that puts them in douche status and another person follows them in the act.
joe: "So whats up man you guys gonna come have a beer?"
bill: "no my vag hurts so I wont be joining you"
james: "since hes no going I wont either."
joe: "man thats some straight up piggyback douchen"
When a modest, respectful guy has sexual relations with a girl and transforms into a disrespectful douche who is hated by his previous friends.
Man, my friend hooked up with this girl last night and it seems like he already went through the douchening.