a term used by someone who is so overcome with anger that all they can think of is a combination of profanity in the form of "stupid jerk ass tits face", mostly heard when something unexpected happens.
"hey dude" "hey what's up?" "i just slept with your mother and girlfriend all week while your were gone and got them pregnant." "what?!? you, you, you "stupid jerk ass tits face"!!!"
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.