Green’s Dictionary of Slang

a gigolo.

1996		K. Lette Mad Cows 32: I’m denied fresh fruit, late nights, good coffee [...] and hot jungle sex with the horndog Himbo of my choice.
1999		Indep. Rev. 3 Aug. 7: A dalliance with a himbo Kavana, a hunk [...] A late-Eighties coining, to pun on bimbo, it had an air-head connotation at first but now means one who can flex his abs without getting sand kicked in his face.
2000		Guardian G2 26 Jan. 3: Stockroom boy-turned-rich himbo.
2003		Mad mag. Dec. 20: None of the bimbos and himbos [...] had the slightest ability to dance.
2011		C. Murphy Shadows of Error 25: Back in college days, Tim had been a real hottie, but even then, he had not been just another himbo, as Cassie had called them.