A lip erection is when you get together with a friend who makes you laugh so much your top lip lifts up to expose a gummy expression. This can happen as you walk towards said friend.
As I walked towards my friend my top lip began to lift. She is just so funny it is like being around Ricky Gervais. We cause each other lip erections.
by Sh4von April 3, 2020
Get the lip erectionmug.