How not to perform Utah Mammoth "Tusks Up" gesture

As the Mammoth enter their first playoffs, expect rivals to be on the lookout for a fan faux-pas that has circulated online all season: Overzealous "Tusks up" hand signs.

How it works: Shaka, or "hang ten" hand signs are raised to either side of the fan's nose, replicating mammoth tusks and vaguely forming a letter U.

The other side: Depending on the fan's vigor and facial expression, the hand sign also can vaguely form ... something else.

• We'll allow the rest of the Internet to explain.

Threat level: Enthusiasm tends to peak on the Jumbotron.

The bottom line: There is no paleontological evidence that mammoth tusks were articulated or retractable, or that they entered the mouth.