When you dramatically shift your opinion of something in the course of a conversation, in a short period of time. A subset of being fake
Via: Yo do you like Kanye?
Seb: Nah, he trash
(5 mins later)
Via: Kanye's the best!! You heard this new single!
Seb: Yeah i love him he's fire.
Via: bruh u Dupe-Talking
Similar to a moonie.The act of bending over & spreading ones buttocks thus revealing the anus to an unsuspecting friend or relative. The "mooner" then manipulates his or her sphincter whilst engaging the victim in conversation, creating the illusion that they are indeed taking out of their arse.