A game in which two extremely bored people toss a
hat on to each others heads. One person sits on a lofted bed while the other sits in a chair or on a coffee table. Lump is achieved after one person manages to toss the
hat onto the head of the other person. Origins go back to
2004 A.
D. after Cool Kyle gave a lame definition of the word lump as a smell of two people in the process of making out.