So my brother was watching me(Tale of skipped minor detail)

[Kilmeister]

My brother was staying with me for christmas, so after all the holiday things were done I sat down to play a little KSP before bed. My brother came in and asked what I was playing so I told him about it and was going to show him my next launch.  I always use Kerbal Construction Time mod, so as a result many of my missions are prepped and built well in advance of their actual launch.  My brother was pestering me to do something quick, so I picked the next project that was nearing completion and timewarped to its completion. Not even knowing the purpose of the mission it was prepared for I played a quick game of match the build with the contract and determined it was a satellite prepped for munar orbit. I was actually kinda nervous as I'd never had anyone watching over my shoulder for a launch, but it went off without a hitch and I was on the way to the Mun.

I timewarped towards my munar orbit injection and it was then that I realized in my haste I had skipped a fairly important step. The satellite was reporting negative communication with KSC, and I thought that it was me simply forgetting to face my panels into the sun before warping, and I told him I could fix it by cheating a bit. Unfortunately, upon closer inspection, I realized the problem was much worse. Because I was using the construction mod, I had built my satellite without any solar panels (They were supposed to be installed after initial construction, since the better version would have completed research by then). I explained the mishap to my brother and we had a good laugh "It's only a couple hundred million dollars, and besides I have others, I didn't need that one anyways!".

After he left and went to bed I went to the tracking station and deleted the mission. I'll just add that one to the "Loss of Vehicle" pile.

[NotAgain]

Fupp n. That small part you forget, which you then remember when you're almost at your destination, which is really quite critical for the non-horribly-failing of the mission. Some of the more common examples of fupps are batteries, rcs blocks, decouplers, and parachutes.

(Credit to @quasarrgames for the wonderful definition.)

[DrLicor]

@NotAgain, well, that surely is a well known thing with KSP players