the act of getting a footjob while on the shitter, while having dihharea. when your at your climax you scream "uh, yeah, im gonna give it to you cheesy!"
holy shit man, this girl was horny, so we went in my bathroom and i gave her the cheesy nacho, it was sensual.
When a girlfriend makes nachos for a party or group of other people instead of making them for her boyfriend. An extreme slight, especially when said boyfriend has been asking for them for ages.
Boy: Hey do you think I could have nachos later?
Girl: Sure, i'll make them for the party on Saturday.
Boy:...Nacho Cheating