Nowhere in the nursery rhyme does it mention Humpty Dumpty is an egg. It was originally meant to be a riddle. As such, there are actually a lot of other things it could be besides an egg.
Top 4 Things Humpty Dumpty Could Be Other Than an Egg
4. A spiral fluorescent bulb (if the fall is more than two feet).
3. Any iPhone (if the fall is more than one foot).
2. The early version of the Boeing Osprey helicopter (if the fall was more than six inches).
1. Adele’s heart (if you just look at her wrong thus inspiring another mega-million selling song)