jgsugden
Legend
I don't disagree - that is another way to give them their props. This is an acting exercise, after all. I wouldn't use it all the time because then you just look like an incompetent jerk. I'll even take it one step further: it is also fine to just wear your heart on your sleeve when the PCs outsmart you as the DM and show honest disappointment that you don't get to executre the cool thing you had planned. Disappointed, but proud/happy.I celebrate the success by acting like they got one over on me and grumbling about it. Players tend to like that in my experience more than kudos from the DM. Though I'm fair and neutral when it comes to adjudication, a little bit of playing The Heel is good for effect.
But that is a side issue. The core that I was responding to here is that people often come here to say, "Hey, my PCs came up with a good use for magic to deal with a problem. What should I do to deal with it?" And for that, my answer is be a fair judge, and a good friend. Rule it how you think it should work - as free of bias as you can be - and then if it works, feel happy for them and help them feel good about it.