I kazoo (it's a noun and verb)and I'm proud of it!A lot of self-important types frown on it as "not a real instrument" but it's activated by the human voice which is the ultimate musical instrument. In the mid-'70's, I was in the house band at the Abbey Tavern Irish pub here in San Francisco and had a beat up old saxophone that I stuck a kazoo on in place of the mouthpiece, and on rock 'n roll songs I would play the kazoo while pretending to "finger" the keys of the sax. People often complimented my "sax playing"!!!