Don't try this at home, unless someone in your family is a professional billiards player. Even then, you are taking a pretty big risk in letting that person hit a billiards ball off your mouth.
Clemson coach Dabo Swinney trusted Loree Jon Jones—a Clemson fan and a member of the Billiard Congress of America Hall of Fame—to hit a billiards ball of his mouth as part of a trick shot.
See for yourself how things turned out.
Here's a full video of Jones playing billiards with the Tigers: