girl : hey guys i went up a bra size today yay ^_^  crowd : well done you moved out of your training bra boy tits
boytits is the term for a female with breasts similar to the chest size of an 8 year old boy
"girl : hey guys i went up a bra size today yay ^_^  crowd : well done you moved out of your training bra boy tits" What is the definition of "boy tits"?