Nothing to feel terrible about here dude. It seems like a pretty trivial situation. A couple of strangers who have shitty jobs were being rude and gave you a hard time over the price of some frozen pizza that you weren't even there to get in the first place.
Seeing this in the download section of Steam during the Puppy Chat reminded me about this little ol thing. Well technically the KickBeat quick look reminded me about it, and the Puppy Chat just made me want to watch the quick look again.
I remember it looking kinda awesome. Tricky, but the sort of thing that's really rewarding when you nail it. Also a great "oh yeah" sound or somethin.