some of you are like little queers with your mis- identification on gyno, every guy who chest doestn look the exact way you think it should........
"HE HAS GYNO.............HE HAS GYNO"
like a bunch of cackling hens who dont have a clue WTF your talking about

You just love to get up in arms over anything...damn you love instigating, you love just playing devils advocate, anything! Is it to get a rise out of someone?
If you can't see the guy has gyno, you're blind and/or maybe it's YOU that doesn't know what gyno is, especially when used in relation to BBing.
The gyno comments here certainly are true, the guy needs a training bra after his next cycle.
The OP was looking to find what could have been the source of that nasty line running vertically down his chest, then looks to take a 90* turn on across his left pec. And the source of that I would say is (like another poster above) the flat Bench Press. That exercise causes more tears than any other.
He has gyno, and a pec tear. Go cackle with your other hens...