a dude's head over heels over his broski. dude is very much in love. so dude calls him hoba. dude can also be referred to as joonie. hoba, aka hobi, aka the broski, is oblivious. but hoba loves his joonie a lot.
The term "hoba" is a contraction of the phrase "hoe bag" used by the famous streamer and online personalities CoachRippy as he addresses his feisty female sidekick Cardi E.