This is the first time it's happened to us!
I picked up one hatchling and she peed on me (and eliminated some urates). Just yesterday, we picked up that same hatchling and another hatchling, and both of them peed and eliminated urates on us!
The youngest I've had aside from these (they've only taken five meals so far, so they must be around a month and a half old) was three months old. They never peed on me!
Ha ha, babies...
Ever had babies pee/poo on you?
I was at a reptile show once and a prospective customer was inspecting a snake at one of the booths. The snake was an adult. It just started peeing everywhere and made a huge mess. Funny! (though I'm sure not for the buyer and the seller!)