In RotRL two things hilarious happened. Srry if it is not as good as I remembered.
First we were fighting fire giants I forgot the fire giants were fire giants.
Me "I cast fireball at that group."
DM "ok." Everyone else "WHAT did you do!"
Me "I blasted those giants with a fireball."
Everyone else "Their fire giants!"
I turn to DM "Can I redo that?"
DM "No."
Me "Sorry guys."
Players other then me grumble.
Number two fighting rune giants in the open(same campaign).
A wizard: I cast reverse gravity on the rune giants.
DM: What does that do?
Wizard: Float upward.
DM: How far?
Wizard: The top of the area.
People decide to sit around until their bodies crash to the ground and collect a coupe tons of adamantine.