McTriple

An upscale McDouble, the next step for a dollar menunaire. Comes complete with three patties. Number of cheese slices are still being debated.

Ben: Yeah I need three McDoubles.
Voice: You dont just want two McTriples?
Ben: Oh, that works...but how many slices of cheese are on those?

McTriple Supreme

When you go to McDonalds and eat so much that you have to consistently shit three times in a row

Holy shit, man! Earlier today I ate so much at McDonalds that I McTriple Supremed!