Q: How do astronomers organize a party?
A: They planet.
A science teacher tells his class, "Oxygen is a must for breathing and life. It was discovered in 1773." A blonde student responds, "Thank God I was born after 1773! Otherwise I would have died without it."
Scientists have proven that there are two things in the air that have been known to cause women to get pregnant: their legs.
Helium walks into a bar and asks for a drink. The bartender says, "Sorry, we don't serve noble gases here." Helium doesn't react.
Q: Why did the chicken cross the möbius strip?
A: To get to the same side.