Player, "I want to seduce the explosion."
DM, "You want to what--"
Player, "I rolled a nat 20."
DM, *puts their face in their hands*
DM, "So the explosion becomes sentient and winks at you..."
Oh, I'd let them seduce the explosion only to discover it's a very dominant top and their character is suffering third degree burns all over their insides.
If you haven't seen it yet, I recommend the movie Dark Dungeons. Basically a bunch of D&D nerds decided to adapt a Chick tract about how D&D is satanic and whatnot, and the end result is absolutely hilarious and meta.
DM, "You want to what--"
Player, "I rolled a nat 20."
DM, *puts their face in their hands*
DM, "So the explosion becomes sentient and winks at you..."