When someone is going to do something really stupid, useless, or annoying, or if you are jealous that someone is getting to do something you're not, it is a put-down. See whatever.
geek: Well, I'M going to get my hair follicle tested for carbontoday!
normal kid: Psh, have fun.
Annie: guess what, i get a free shopping spree at neiman marcus today!!
Phrase used by Nano community to warn against coins with fees, a.k.a. 'shitcoins' as a poor investment. Especially those which will have $40 fees after two more reward halvings or at only 6tps usage in a world of 7.8b people.
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.