Why does it hurt when you bite your lip on accident but doesn't when you do it on purpose

I don't know what the coding means but it looks annoying

@ilovecats2018 Oh I see

Nah

@darkfire don't worry about it yet friend

@darkfire good thinking

if water existed 4.6 billion years ago why does it have an expiry date?

damn that's good did you make it?

The guy that discovered milk what was he doing with cow in the first place? (Follow for more random questions! :))