Man boobs before reaching maturity.
That chubby kid has the biggest boy bosoms I have ever seen.
by Horace the contrived goose July 09, 2013
Can you define these popular missing words?
Pretty much the same as moobies, but are usually found on boys under the age of 18.
Your kid should lose some weight, he's developing boy bosoms.
by Shadow L. December 12, 2007