Water Method

 

Step 1.

Bring a pot of water to a rolling boil on a stove or illegal dorm-room hot pot.

Step 2.

Place ball in water for approximately 10-15 seconds, until dent pops out. Note: Multiple balls can be done simultaneously.

Step 3.

Remove ball with slotted spoon and let cool.

Flame Method

Step 1.

Locate an open flame—preferably a lighter.

Step 2.

Hold ball three to four inches above the flame, moving it around until dent pops out. Do not let fire rest too long in one spot or the ball will melt.

Step 3.

Let cool.

Adapted from The Book of Beer Pong by Ben Applebaum and Dan DiSorbo, Chronicle Books.

[Via Wired.com]