A fucked up combination of lunch and supper; caused when young lovers screw from the early hours of the morning to till the afternoon, and bodily needs (such as hunger) forces them to drag their sorry, teenage screwing asses out of bed to go to Denny's and fulfill their post sex needs. Then after filling their stomachs, the ignorant, idiotic teengers go back at it until they awaken again for brunch. The usual hours for lupper are from whenever the hell you start fuckin to 3 P.M.
Girl: OHHH BABYY OOHHHH.....
Guy: yea yea get it oh wait im kinda hungry
Girl: lets go get sum lupper at dennys!
part way between lunch and supper, like brunch only the afternoon version
the only time this meal would even be thought of is when your idiot family decides to leave like an hour before supper and cant stay just like 2 more freaking hours! so you end up eating lupper at like 3 in the freaking afternoon!