residue. noun remainder, remains, remnant, leftovers, rest, extra, balance, excess, surplus, dregs, residuum She loaded the residue of lunch onto a tray.
Best Answer: Boogers are made of dried mucous, dust,pollen and anything unwanted breathed up your nose. Eating boogers is said to boost your immune system when your a kid. But adults should just use a handkerchief.
Believe it or not, there's a wikipedia page about this: Eating mucus. Turns out the nose-picking part can be dangerous, causing nose-bleeds, infection, and nasal septum perforation, but there are some scientist who think eating boogers might actually be beneficial to the immune system.