A Kyle, in derogatory slang, is an online caricature of a white boy referenced as an antagonistic character in memes. A Kyle is a young white man of low socio economic standing with a propensity to drink large quantities of Monster energy drink and do dumb shit like punch. A man who, when browsing his name on Urban Dictionary, will get a ridiculous confidence boost. Kyle definition, a narrow channel of water between two islands or between an island and the mainland; a strait or sound. 'We worry that the Monster brand may start to either be seen as 'your father's energy drink' or a drink for people that see Kyle as a role model,'. Kyle is an online caricature of a white boy referenced as an antagonistic character in memes.