That's a garden shed, right there. That is what a real man retreats to. It's not some place given over to us as a "man cave" by the wives who have taken ownership of the rest of the house; nor is it a basement, an attic or some rec-room ... that is a genuine garden shed. A place for tobacco smoke, 3-in-1 oil, jars full of screws, nuts and fixings that have long since ceased to be useful. A place made habitable by an old kettle, a chipped mug and a box of PG Tips.
The old net curtains provide proof that there's still a wife who doesn't need to know what goes on in that shed ... as far as she's concerned, it really does take all weekend to strip that engine. Make sure no-one ever tells her otherwise.