Green’s Dictionary of Slang

gig n.9

1. (US) a goading or gibing.

[US]Ade Forty Modern Fables 170: The Old Gentleman was very rough on Wallie. He gave him the Gig at every opportunity, for he had no sympathy with Puppy Love and he hated a Dude.
[US]Goldin et al. DAUL 80/2: Gig...a renewal of pressure; a final effort to swindle a difficult victim.

2. (US campus) orig. milit. use, a disciplinary report.

[US]P. Kendall Dict. Service Sl. n.p.: gig . . . demerit. [Ibid.] gigged . . . denied leave for some minor infraction.
[US]Current Sl. V:3 16: Gig, n. A report for deficiency (US Military Academy).