manboobs

For fatty or breast-like looking pectorals. Sometimes with puffy or raised nipples.

Although this condition (adipomastia) is normally found on overweight men (Danbooru post #6115619), it is also a fetish name used for slimmer men with feminine breasts (Danbooru post #5044172, Danbooru post #5025833) or muscular men with defined and round pectorals (Danbooru post #4072298, Danbooru post #4123358).

It is also not to be confused with gynecomastia, which occurs specifically due to hormonal imbalance. Adipomastia is also known as pseudogynecomastia for exactly this reason.

Do not tag with muscular male or toned male unless the body is viable and proportional with the chest size. Otherwise just the manboobs tag will suffice.