A Phrasal Verb a Day

To fall asleep, usually when you don't want to. E.g. you're so tired that your head starts rocking forwards and your eyes close involuntarily. "I was on the bus and I started nodding off. I just closed my eyes and fell asleep for 10 minutes until the passengers started complaining and I had to keep driving" HA hahahahahah! Fantastic joke. Thanks :)