What was your first newbie moment?

We had a new AF which is 8.6 wide, add a touch more for the slide. First road trip, pulled into a new RV park for the night. The slots were narrow and had curbs on each side of the tt. I told the host we were wider than normal by roughly 8 - 10". He said no worries. It was late, I pulled thru just left the truck hooked up, I went in to take the slide out and it stopped 6" short, hum why is that, I thought. Brought it in and did it again, stopped again, what the @$*&!#. I did it one more time and this time it went out. We went to bed. The next morning preparing to leave I went to unplug the elec and found I took out the elec post, opps. I only had a small nick on the TT slide. Now I stand out side no matter how clear we think the slide is and I watch while the wife slides it out.

We live in AZ, that small nick in 5 - 6 years ended up crawling up the whole side of the slide, delaminating it. No water, just flat-out heat.