That one person in class who never has a partner and therefore is either tacked on to another group of two or is left to work by themselves. This can also be a result of the class having an uneven amount of students.
quite similar to the term hung-over. most likely stoned/high the night before and in the morning experiencing a feeling of__ being not all there, tipsy, STILL high/stony, or in very lethargic bliss.
"did you blaze this morning with out me?
"no no, im just leftover from when we smoked last night."
"dood whats wrong with you?? are u hungover from lastnight or something?"
"no, i only blazed lastnight and now im super LEFTOVER.."
leftover guy or girl who has been in past relationships but has not learned anything from their mistakes. all they have gotten out of past relationships is to not trust people and accuse people of false things. guy or girl who is a pain to be in a relationship with because they have so much past baggage and have not learned new social skills to maintain a good relationship.
Peter keeps accusing Sally of cheating on him when she is not. Sally finally had to break up with Peter because he is such a leftover.