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1. rizzing
essentially used as a filler word.

the meaning of it changes depending on its context.
"dude, i just got my phone jacked! im soooo rizzing!"

"omg! i got a full ride to Harvard! this is soo rizzing!"

"you need to shut up. you're rizzing and its seriously irritating me"
2. Rizzing
Extremely embarrassing to an unbearable degree; used to describe someone who is so shockingly embarrassing, you can't even stand to be in the same vicinity as them
Oh my god, he is SO rizzing.
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