The ultimate comeback. This can be said as a response to any insult directed at you. It doesn't even have to make sense, because "so's your face" makes sense in itself.
Mark: Dude, you know you love the cock.
Craig: Yea..so's your face!
The ultimate comeback, because really, who would want it to be their face? Answer: NO ONE. This snazzy phrase often leaves the victims speechless, weeping or just plainconfused.
Asshole: Hey FAG those pants look like spandex!
Fag: So's your face.
Asshole: *in shock*
Elderly Lady: Excuse me young lady but you have to pay for that!
Teenager: So's your face.
Elderly Lady: *passes out*
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.
You didn't get any napkins with your takeout pork fried rice? Womp womp.