Either underage or early 20 something people who act like idiots under the influence of alchol. These people cannot hold their liquor whatsoever, yet insist on imbibing massive amounts of it anyway, on a regular basis (ie. almost every night). Pubs and other drinking establishments effectively take over raising these people where TV, and in rare cases, their parents left off. Vomiting, fighting, and public urination are all commonplace things for kinderdrunks, along with a wide assortment ot moronic, juvenile behaviors.
Did you see that idiot that got kicked out of the pub last night with his pants around his ankles? Man, what a kinderdrunk!