I'm a gardener sometimes, and there is no more manly feeling than ripping up vegetation. Especially when you get to a stubborn root, and so you furrow your brow and give it a single, firm pull and it frees itself from the earth right at the apex of your motion and you stand there for a second or so, dust settling in the air, root system held rigidly in your outstretched hand. It rarely happens like that, sometimes it takes a few pulls or you have to get better purchase or it breaks off at the ground or dirt flies into your face or some shit like that, but when it does, very manly.
EDIT: Oh and one time we did a bit of landscaping when we moved house and it didn't all fit in the bin, spent an hour beating it in with a crowbar. More of a maniac feeling in that case, but there it is.
EDIT: And people bringing me things like jars and bottles and windows to open. Basically any minor display of strength that goes according to plan.