Guys, why do you bite your lower lip while looking at a girl?

[Anonymous]

[jasco]

Mm she damn sexy is usually why I do it because i am thinking

[GolxDX]

I don't. Most guys, I presume dont. Only cheesy "gay" ones do.

[Marhaban-1]

It's a sign of attraction apparently

[MuffinBoi]

I don't