1. [late 19C+] (Aus., also gee-er, gee man) one who ‘gees up’ the potential customers into a sideshow, strip-club, confidence trick etc.
2. [190s-30s] idle chatter, empty talk, ‘blarney’.
[1920s+] to deceive, to ‘tell the tale’.
[1920s+] to boast, to brag, to ‘swank about’.
[1920s] (UK Und.) to take part in a swindle.