To roger a woman up the rear who is under 18 but over the age of consent, this was illegal in the uk due to homosexuality laws until recently but now chuffucking is well practiced fun
Marc: dude i rammed this girl the other day Marc 2: Dude no way!!
Marc: Yeah and then she let me chuffuck her shit was so cash Marc 2: no way i was chuffucking your mum last night too
Marc: ...
Chuck is a metaphor for all the people in your life that you think you have under your control. Then, when you least expect it, BAM!! You get chuckfucked, leaving you confused, embarrassed, and slightly in awe of the power that just got released upon you.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"