Refers to a place. Usually there are things happening, good or bad, in this place.
Y'allgon' make me lose my mind
Up in here, up in here Y'all gon' make me go all out
Up in here, up in here
Y'all gon' make me act a fooooool
Up in here, up in here
Y'all gon' make me lose my cool
Up in here, up in here