Boy Bosoms 

Man boobs before reaching maturity.

That chubby kid has the biggest boy bosoms I have ever seen.

Boy Bosoms by Horace the contrived goose August 16, 2013

boy bosoms 

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.

boy bosoms by Shadow L. January 5, 2008

boomsy boy

A really sad nick name that a mother gives her son at birth and continues to call him that throughout his life.

Son: Can you buy me a razor?
Mom: Anything for you BOOMSY BOY! (: <3

boomsy boy by Sicada Lope October 20, 2013