Reason #138 to stop hating on Canadians: in a 1980 study, they found a neat trick to make toothache go away without even parting your lips. All you need is an ice cube and a loser to sign-diss.

Fine, you don’t really need the loser — you just need to rub the ice cube on the V-shaped area that forms between your thumb and your index finger when you show that dude on the Segway just what you think of him: 5-7 minutes should do.

That V-shaped area contains the nerve endings of neurological pathways connected to brain centers that control the sensation of pain in the hands and face. Rubbing the ice cube on it helps block those centers — 90% of the study participants reported this technique helped nix the toothache. (The other 10% probably owned Segways.)

Nifty, eh?