A fight leading to separation. This can occur in any relationship, including families and frinedships. The separated parties generally pretend that those on the other side no longer exist.
Mike: Should we stay at Jeff's place tonight?
Tim: No way man. Me and him had a falling out.
having your heart ripped out because you love someone but you don't see a future with them and you can't really break up with them because you don't have a legitimate reason for breaking up with the other person beside you don't feel like being with them anymore.
person 1: dude what's wrong?
person 2: I'm falling out of love with my girl
person 1: that sucks
A term meaning 'to lose consciousness' due to a person's over consumption of GHB. Minutes and/or, sometimes, hours later, they tend to regain consciousness and are, fully awake, cognizant of their environment.
She can't handle her G, honey, she's about to fall out.