In keeping with the whole 'snack' not meal... Ill have to say xtra butter popcorn with jalapenos.
As for a meal pretty much anything u can get at a taqueria or burger spot for less than 10 bones, devour it in 10minutes with enough time to spill some sht on ur shirt or pants.
I miss those days a 5 would get a El Farrolito burrito and a soda... RIP