painting my nails - A lie girls tell to hide the fact they're finger-fucking the

A lie girls tell to hide the fact they're finger-fucking themselves in public.

At the grocery store, I told my mom I was painting my nails instead of touching myself.

During lunch break, I said I was painting my nails when my friend walked in on me.

I texted my crush, 'I'm painting my nails right now,' and he replied with a smiley face.