A common sign that means, contrary to popular belief, that it is illegal to drop off trash in the specified location. This trash may or may not include human fecal matter. This sign will never cease to amuse high school kids.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy