Drop off and Flake out

Drop off verb - Change from a waking to a sleeping state.

Flake out is a synonym for drop off in nod off topic. In some cases you can use "Flake out" instead a verb "Drop off". informal substitute

Flake out verb - Change from a waking to a sleeping state.

Drop off is a synonym for flake out in fall asleep topic. You can use "Drop off" instead a verb "Flake out".