M was complaining in the car that he was just bitten by a misquito. Probably the same one that bit me moments earlier. Here is the conversation I heard in the back of the van.
M: Ouch! These misquitos keep biting me! Ouch!
Jacob: No M. It's the girl misquitos that are biting you. Boy misquitos don't bite.
M: They're still biting me!
Jacob: It's only the girls.
I know I was much older than 4 1/2 before I understood that girl misquitos were the ones that bite.