Backstory: I, a druid, snuck into the roof of a secret passage By changing into a spider, to get into the town hall to find the cult that has taken over.
DM: It’s hard to find your way, roll to see if you get lost.
Me: Natural 1
DM: You are lost and fall into the oil of the flame trap.
With some help from telepathy and actually looking, I make my way out and find myself in front of the passage with a lever puzzle to try and open it without flaming myself to death. However our wizard casts dimension door and comes to my side so they can cast knock to open it without the puzzle.
Down the road a little we are facing an undead witch, and smells the oil on me, and comes and trys to set the oil in my nose on fire.
Me: Oh god I’m gonna di- HOLD ON A SECOND
Me: IM A TIEFLING I HAVE RESISTANCE TO FIRE.
Our friend with the book checks
Friend: Yep you have fire resistance.
DM: ….yknow what, I’m gonna let you do something cool. You inhale the fire and snort it back out at her.
Me: I FORGOT I WAS A TIEFLING.