Pavlov's dong
An erection that occurs every time you are exposed to a certain, seemingly unrelated
stimulus.For instance, getting an erection every time you see a hot chick is not a
pavlov's dong, but getting an erection every time you see a trumpet would be.
Pavlov's dong is usually caused by association. If you had this really hot girlfriend who loved donuts and she broke up with you, the association of
your old girlfriend is what would cause a pavlov's dong with donuts.