What was your first RV noob disaster (or near disaster)?

This wasn't my first as I can't remember that far back but it was the first with my current camper. Lit the oven with one of those pistol-shaped lighters then laid the lighter on the stove grate ... not considering the fact that I also had a fry pan going so the grate was hot. It went off like a pistol all right! Luckily no injury or serious damage.