It is when you are just sitting around minding your own business and you have a little unexpected burp and a small amount af acidy puke comes up with it and you have to swallow the "hot snack".
"Dude, I was just talkin to my girl and out of no where I had to swallow a "hot snack" with out here noticing"
This is defined as a side chick who has few morals and who let's you have sex with her even when you may already have a wife/girlfriend. The girlfriend/wife is the meal. The side chick is just a "snack".
Kyle: “did you see Jenny at the partylast night? The way she was shaking that ass really turned me on!”
Jessie: “the hosnack? I saw her but she was busy flirting with Steve and Jeremy so I didn’t have the chance to ask if she might be into women too.”
The act in which you blow a nasty "wet fart" into your partners mouth for sexual desire.
Useually after scarfing down at a mexican restraunt, and having the pre "taco shits".