be on the fritz

slang

1. Of a machine, to be acting strangely or malfunctioning. Our washer is on the fritz, so I'm on my way to the laundromat. Mom called the repairman because our TV is on the fritz again. I was going to make a smoothie, but the blender's on the fritz.

2. Of a person, to be drunk. Do you remember last night at the bar at all? You were really on the fritz! Well, I must have been on the fritz if I got up and did karaoke at the bar last night! Help him get home, will ya? He started drinking whiskey, and now he's on the fritz.