Always used with a hashtag (#). Describes a girl who acts like a guy and looks like a guy--to an extent--but denies being gay; can also apply to anyone basic.
That girl looks like a guy; how is she not gay?
She's #beefandbutt.
Unlike a "Bee hatch" (a hatch in a beehive), Beehatch is a nicer way to say the word BITCH, which could either be a female dog, or a whore/cunt of a woman (=bad female).
It's also a way to get your point across past the censors on chats, and forums.
She's a B*** man!
Hey! What the F***! I did not say any M***F***ing ***!
What the F*** are all these stars for?
Hey, calm down dude! It's just the site's censoring!