I may be afraid to ask, but how do we know this is a trap?

Perhaps the protruding bulge in the panties?

Possibly, though for some reason I'm not sure. I'm not one to look at a lot of stuff tagged like this, especially when they are of this age. But whatever. Trap or not, it's a nice personification.

The comment at the bottom seems to confirm it. See the ♂ symbol?

For some reason, I encounter way more male Audino than female ones, so I sort of subconsciously expected this to be a trap.

And also one of the tags is 1boy