Slang for the headcrabs in Half Life 1 and Half Life 2.
Headcrabs latch onto the victims head and turn him/her into a zombie, hence the name headhumper

Marginalized Orientations, Gender identities, And Intersex. it’s meant to be an all inclusive umbrella term for asexuals, homosexuals, multisexuals, trans people, and intersex people. Alternative to LGBTQIAP+
Alternative to MOGII, easier to pronounce.

Headhumper is another word for the famous Half Life's Headcrabs.

those things in mario bros. in the ocean that hump ur head.....