A friend for the day/evening. aka. A hookup. Derived from the Spanish "Hoy" which means, "today."
Norma: "We had so much fun in Tijuana today... but what's your dealio? Are you not looking for anything long-term?"
Alejandro: "While I loved our pictures in front of the zebra-painted donkeys, I need to be honest with you... I'm just interested in being hoyfriends. You down?"
A variation of the word 'Hoy'which is commonly used between two BFFs. By adding 'roo' on the end creates a sense of excitement and humor in the coversation. For other people it may create an image of a jumping kangaroo holding a sign which says 'hoy.'
Look at that woman standing in front of her run-down trailer with two babies on her hips, a beer and a cigarette in one hand, and the other hand adjusting her swass wedgie. That's so Hoyer!