Lady #1: The doctor has me on all kinds of medication for my STD.
Lady #2: Oh?
Daughter of lady #1: Mom, for the last time, it's 'SVT,' not 'STD.' You have a heart condition, not a sexually transmitted disease.
Lady #1: Shit, I really have to stop getting those two things mixed up!
via Overheard in New York, Sep 15, 2007