Schrödinger's crabs
Schrödinger's crabs means, you can't have an STD/STI without getting tested.
Do you have an STD? I don't know. Schrödinger's crabs.
Have you gotten tested? I don't want to know, Schrödinger's crabs.
Have you gotten tested? I don't want to know, Schrödinger's crabs.