What is Lay-by?
1.
A place in the road where it is legal to pull over and stop for a short period of time. Also can be used as a place where two consenting adults may participate in sexual acts in a public area.
Driver: Oh look a lay-by... i'm feeling frisky!
Passenger: Pull over then, I'll sort that out!
Driver: But there is already a car there?
Passenger: Don't worry i'll put on a good show!
See