Falling asleep at the wheel 

When a hamster finds themselves really tuckered out, after all that cardio. And doesn't want to move from the wheel before taking a nap.

Man. Moo Moo sure has been falling asleep at the wheel a lot lately. I wonder how much he'd hate me if I poked his little belly right now.

Falling asleep at the wheel by Olive989 March 3, 2023

Falling Asleep at the Wheel 

When you fall asleep while jerking off

Bro Joeys mom walked into his room and caught him falling asleep at the wheel!

Falling Asleep at the Wheel by Not An Actual Gamer January 10, 2020

Falling Asleep at the Wheel 

When someone is obviously tired and/or dozing off, but refuses to acknowledge their lack of alertness.

Bob: Joe Anne, you look tired.
Joe Anne: No, I'm just...thinking.
Bob: Seriously, its bedtime.
Joe Anne: No, I'm awake!
Bob: Joe Anne, you're falling asleep at the wheel.

Falling Asleep at the Wheel by Breezy Cartheezy April 23, 2011