Ghost chub

A suspected hard-on (but not confirmed or confirmable i.e. the suspect is clothed.)

<M>OMG, Zeke has been making out with Car for the last hour and a half!
<B>w00t! Ghost chub!

ghost chub

A suspected (but not verified) hard-on.
Making out without sex almost always produces a ghost chub.

Zeke and Marie were making out: what do you want to bet Zeke's got ghost chub?