gravity
Puns about gravity.
BatteriesGravity batteries have interesting potential.Up hillI tried to go up hill but fell back down. The potential was there but it went down hill.Black HolesIf you don't understand the importance of looking at a black hole, you don't understand the gravity of the situation.Anti-GravityIt's impossible to put this book on anti-gravity down.PotentialThat guy had a lot of potential until I dropped him .Gravity Hit MeI never knew the gravity of throwing a ball really high into the air, but then it hit me.