A Dillberry is someone who does not take good care of there hygiene and normally has serious amount of pimples around his body. Normally a Dillberry will also have a big Ego to accompany the stench they give off.
Person 1: Hey what's thathorrible smell?
Person 2: Oh that's Charlos.
Person 1: Does he not take showers?
Person 2: No! he's an absolute Dillberry!