16. Helium walks into a bar and orders a beer. The bartender says, "Sorry, we don't serve noble gases here." Helium doesn't react.
17. Shrodinger's cat walks into the bar and doesn't.
18. A Higgs Boson walks into a church. The priest says "We don't allow Higgs Bosons in here." The Higgs Boson replied, "Well, without me, you can't have mass."
19. A programmer's wife asks him to pick up a loaf of bread and, if they have eggs, get a dozen. The programmer comes home with a dozen loaves of bread.
20. There's a band called 1023MB. They haven't had any gigs yet though.