When a couple in separate moving cars drives in close and kisses while the two cars speed on. An object approaching the cars, the couple will let go at the last possible minute as the cars swerve away.

When a gay man throws just enough shade that you can't tell if he's being nice or cruel, yet you can't deny what he says is true and you can't fight back.

When smoking marijuana discreetly in a confined environment (i.e. dorm room, office cubicle, etc.) smoke is often exhaled through dryer sheets for decreased smell. Sometimes, when an especially good hit is taken, brown lip-marks can be seen on the dryer sheet. This looks disgusting, and is known as the "kiss of death".

When you're fucking a girl drunk and she starts has/her period and her pussy lips accidentally touch a part of your body.