How often do you accidentaly bite your lip/tounge/inside of your mouth

I hate it when this happens.

I don't know, but it's a fucking bitch!

I bite my lip all the time, if I'm embarressed or if I am trying not to laugh or when I'm in deep thought... so I picked more then once a day because I do it multiple times a day.

That only happens when I intend to bite on a utensil but end up biting the insides of my mouth instead, but that only happens about thrice a year at most. It hurts like hellll. D:

i bite my tongue to stop from smiling or laughing o.o

I BITE INSIDE MY MOUTH MANYTIMES IN A DAY.

I only bite the inside of my mouth when I nervous