Green’s Dictionary of Slang

hot-dogger n.

[hot dog n.2 ]
(US teen/campus)

1. a show-off, a braggart.

Show quotations
[US]G. Underwood ‘Razorback Sl.’ in AS L:1/2 53: hot-dogger ‘show-off’.
D. Morrell Rambo 101: We don’t need any hot-doggers in our outfit.

2. a successful, talented individual.

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[US]G. Underwood ‘Razorback Sl.’ in AS L:1/2 61: hot doggern Person with great talent.