Party is on a boat when a storm starts. Storm is terrible lightning, ship is completely gets destroyed. I am playing an illusionist. I roll initiative, so the first thing I do is roll for a perception check. I roll an 18. I hear wings flapping in the distance. My character was an illusionist and I had been drinking ALOT. So I decided it was a good idea to summon an illusion of a dragon. The second I do that the DM looks at me and just get's ******* livid with me.

DM: Storm dissipates, no one was hurt.

Turns out the storm was caused by a thunderbird, who are scared of dragons.