A wussy insult used by 6-Year olds or pussys that are afraid to swear.
"My mommy said I can't use bad words- so you're a dummyhead!"
1.a person who does dumb things.
2. an idiot
3. a person who has no sense of knowledge
He still buys that girl everything and she sleeps with the whole hoood. He is such a DUMMYHEAD.