Nasty,disgusting,windows on cars that are smeared with snot from doggy passengers pressing their noses against the glass. Most commonly found on behemoth "granny tank" autos owned by a little old ladies with 3-5 poodles.
Hitting someone when they cannot see it directly coming. Usually in a physical altercation hitting them from behind in the head with their bare hands, a weapon, or just to stun the person in some way.
Inviting the intersex person Krytelline Aphrodite for an interview then discovering s/he had jutting teeth with one missing causing incomprehensibility.