The flabby breasts of a man.
Man + Boob
Can also be used in any context, any time. Can be used as an adjective, noun, potato, octopus, it is relevant in all cases and contexts.
n: "My moobs hurt when I run. D:"
adj: "Wtf dude, youre acting so moobish."
v: "You're always moobing around! It makes my heart hurt."