Related Clues:

• Not at all nerdy
• Cadence shout
• Not at all square
• Fanny pack spot
• Place for a holster
• "In the old grooveroo"
• Holster location
• Like many a 21-Down
• Up on things, daddy-o
• Cool, as a daddy-o
• Cool, like a cat
• Hardly squaresville
• Femur terminus
• Syllable in cheers
• "Hooray!" preceder, when repeated