Thats almost as good as the old welding test they used to give on some job sites, where they bend 1 rod in to a Vee then stand it and a 2nd rod up in a pyramid shape. (bent end up resting against the 2nd rod).
The test is to pick up the 2 rods with only a single 3rd rod. (no welding allowed)
If you can pass that test the last one is easy. You take a hand full (as many as you can hold in one hand) of 7018 (7024 if you got some) 1/8 or larger, put them behind your head and bend them to 90 Deg.