night lover

1) someone you have an affair with
2) a secret lover (oh my)

Her husband divorced her because he found out about her night lover!

night lover by Fallon October 19, 2003

Saturday Night Lever 

The erection which surfaces during a session on the dancefloor at the local discoteque.

It was clear for everyone at the dance-off to see that Tony Manero really had a Saturday Night Lever.

Saturday Night Lever by The Wheelchair Detective August 22, 2006