It wouldn’t surprise me.
My wife has a sleep disorder that they are currently calling ‘sleep attacks’. Yes, I immediately thought of Garfield as well. I suspect it is related to her MS and/or medication.
She has fallen asleep standing up (in the kitchen), bending over (kissing the kids goodnight), 3 minutes after getting in the car (as a passenger), sitting at the table (head propped up on her coffee cup), and on the toilet. She is able to remain standing or sitting for quite some time (more than a half-hour), but has fallen a few times. Oddly enough, if she is actively thinking or participating in something she stays awake. As soon as she is relaxed she is susceptible to napping.
The terrible thing about it is that she insists that she is not tired but can’t stay awake, and frequently denies that she’s nodded off.