The situation needs a temporary quick-fix, as there's no time to do an actual repair—or else, the materials for a more permanent fix aren't readily available.
Duct tape is very useful, and if it isn't involved with water then duct tape can be a VERY good fix for cracks or broken parts. It may just be better to work over the item with duct tape than to try something else.
Inverted: Bob patches a strip of duct tape with a pipe.
Bob notices the leaky pipe and considers using duct tape... but then sets out to fix it properly.
Bob considers using duct tape... but ends up calling the plumber, who comes over right away.
Bob tries to use duct tape, but it doesn't hold together.
Tomorrow. Today, he's much too busy, so he takes 5 seconds and wraps a length of duct tape over it.
And then uses duct tape to fix the pipe and charges Bob an arm and a leg.
The house, Bob's clothes, in fact pretty much everything in town is held together with (or outright made of) duct tape.
Bob has amazing duct-tape's superpowers that allow him to repair anything to perfect condition by just using it!
Zig Zagged: ???
Averted: Bob calls the plumber, or fixes the leak using something other than duct tape.