To Juan Out means to consistently under-perform, be late or not show up to events. Inevitably there's always that one person who can't make it to the meeting, skips class, or struggles to do the bare minimum. Always must have that one...that juan's out.
Did Rob bring the beer to the pot luck like he said?
Nah man! And I just knew he wouldn't.
Ugh, just like Rob to Juan out.