The Brief: To be "geeked" or "geeked up" is to be excited or under the influence of drugs or alcohol.

DEEP DIVE
“Geeked” is a slang term for being excited. The phrase “geeked up” can be used to describe a state of excitement, as well as when an individual is under the influence of drugs or alcohol.
Imagine being geeked and whole time they texting their ex
— H (@HlNDRIX) March 11, 2021
Me geeked up in the restroom at the club https://t.co/ujciTtm9vu
— LAKE08SHOW24FRANK (@FRANK14CMRGO) March 5, 2021