Sardonic: Grimly mocking or cynical (adj)
Redonkulous: Significantly more absurd than ridiculous to an almost impossible extreme; without possibility of serious consideration (adj)
Sardonkulous: Ridiculously cynical, absurdly mocking, sardonic to the extreme (adj)
Matt: You'll be trafficking in sex slaves next.
Jess: Dude! Too far. That's sardonkulous.
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Jess: GET OUT!
Matt: Man, you're being sardonkulous
when something is so ridonkulous, so that the ridonkulousness of it is multiplied by three, or, in other words, tripled. thus, it is not just ridonkulous, but TRIdonkulous. the "tri" signifies the triple nature of the ridonkulousness.
see ridonkulous
karl: shit did you see pyramid that kid made out of orangina bottles?
jay: that was ridonkulous.
karl: no man. that was beyond that. that was TRIDONKULOUS.
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.