A button fell off my coat.
Business always falls off in the winter.
MC ___'s new album is wack - he's fallen off big-time.
What if I fall off?
Almost immediately she wished he.d let her fall off the cliff.
Heart pounding, she trotted down the sloping trail, glancing nervously at the hill to make sure she didn't suddenly fall off her path.
Alex kept looking back; apparently to make sure she didn't fall off.
If not preserved in an envelope the calyptra and operculum are very apt to fall off and become lost.