In case you missed it over the weekend, one dude bit another dude's finger off during an altercation at Beyoncé and Jay-Z's 'On The Run' tour stop.

A man in the audience allegedly groped a woman, and began fighting her boyfriend... That's when, TMZ reports, the boyfriend got his finger tip bitten completely off.

The whole thing is super disturbing.

SEE THE PIC HERE (CAUTION: please do not continue if you can't handle the violent image)