lose one's grip and lose one's hold
tr. to lose one's control over something.When I begin to lose my grip, I will just quit.I'm losing my hold. It must be time to chuck it.
schiz(z) out
in. to freak out; to lose mental control.What a day! I nearly schizzed out.I schizzed out during the test. Got an F.
spastic
mod. overly responsive; out of control.She can get so spastic when I come in late.Tell the spastic jerk to shut up.My dad's spastic when it comes to drugs.
spaz
n. a fit or an attack; a strong reaction to a bad or funny situation.My father had a spaz when he heard.Take it easy! Don't have a spaz.
zoom out
in. to lose control.I nearly zoomed out when I got the news.Fred zoomed out and started screaming at Ernie.