Teen Male Breasts
Every year almost 14,000 men go under the knife to correct a condition known as gynecomastia: unwanted breast tissue commonly referred to as "man breasts."
Ref. https://abcnews.go.com/GMA/story?id=4331232&page=1
I do not think I have ever seen this, no I have seen it in fat guys but I believe that is just from being overweight.