I was playing as Pyro, I had a medic we went to destroy a sentry. It had a Pyro guarding it, so we ubered, the Pyro did as expected and kept airblasting. So I thought of a plan while being airblasted. I waited for the level 3 sentry that was still shooting at me non stop to shoot a rocket, reflected it to kill the Pyro, and had just enough time left to destroy the sentry and we won.
Felt amazing to actually have that work out.