When somebody dresses up like him for the (very competitive) Halloween costume contest at work...and wins!
The actual "Dan the Engineer" is on your left in the yellow shirt - very kindly shaking hands with his impostor sporting safety glasses and a hat emblazoned with "Concrete Counts" - my dad doesn't actually own such a hat, but very well might have if he'd come across one... further proof that we all answer our existential call one way or another.