Half meaty

When you get half of an erection from any activity involving a hot chick

Chris: whoa! That girl you were grinding with on the dancefloor was smokin!!!
Rich: right! I need to sit down, I'm half meaty!

Happy sock

The sock you jerk off into. The reason you're mom only finds odd socks in the dryer

Mom: look the dryer ate another sock.

You: no, that's my happy sock!