100 degrees leather jacket ‘cause I’m supa hot boyy OHHHHHHHHHH

A portmanteau of carpe diem, a Latin phrase that means “Seize the Day!” and DM, which stands for Direct Messages. This word means seizing the day via DMs.

the greatest rapper of all time but he's not a rapper

Something you spit, like a rap

I broke up with my ex girl,
here's her number.
psych!!

that's the wrong number!
ohhhhhhhhhhhhh

The undefeated champ...but he's not a rapper

DeShawn Raw, a legendary non-rapper who took the internet by storm in the early 2010s, having hundreds of millions of consecutive wins in rap battles that he easily obtained with his witty one-liners and roasts.
The over-the-top "OOOOOOHHHHHHHHHHHHH!!!!" from the first episode of his rap battle videos is still popular to this day.
I just made this because it seems that most of the definitions for him are memes.