When I was a teen and young adult, there were also those boys and men who assumed that you could only get big breasts if you were sexually active and someone played with them a lot. I mean… guys could look at my Gran, my mother, myself and three sisters – all but one who had more than ample bosoms, and decide it had nothing to do with genetics. Five out of six females all in the same family that they were looking at were large breasted; in their minds, that could only mean five of those women must have had their breasts played with so much that it made them big.