Hmm, I'm not too good at manly. I do have my moments tough.
About year ago in the autumn/ early winter, me and a mate were in the forest near his grandma's house collecting firewood for his grandma. In the middle of the forest there is a small river thats carved out a steep ravine type thing that can just about be jumped across, and is about 30-35 feet deep.
If you fall down, it takes a while to climb back out, because the soil is so loose and slippy. But yeah, me and my friend were chucking great big logs and branches over this ravine, jumping over after them, then carrying them back up the hill through the forest to his grandmas house.
That felt pretty manly.
I also emptied the magazine of a 12 Gauge semi auto shotgun in like 2-3 seconds once. It almost knocked me on my ass, but it felt manly as fuck!