Well once I saw someone selling a Plane, full HP, for 5k. At the time I felt like a millionaire with just 100g so I asked the seller if they could lower the price cause it was really expensive... That made me feel quite noobish...
And also when I first saw Angela I thought it was a real person. So I spent an hour trying to PM "Angela", Spent another hour on DOALA trying to find their EQ, and the one day I saw two people in the same place both with Angelas and I was like "What? But isn't... I'm confused." So they had to explain Angela was a human pet to me, which took a while.
Also, way back when I didn't know what bursting was, one of my nicest friends ever invited me, a level 14 at the time, into a bursting team full of level 100+s. I didn't know what bursting was so I got my remote and set it to auto. We were bursting overnight so when I came back on the computer I found everyone wondering why they hadn't gained any levels, and how bursting is supposed to give you loads of EXP and everything. I chose then to ask "What's bursting, anyway?" I feel so bad nowadays...
Then another time someone was explaining what bursting was and they said you can get a lot of EXP from it. I asked how much and they said "Depending on your level and your team's level, it can be anywhere from 1k to-" They ran out of space in the chat bar so before they could finish, I said "WOAH 1k EXP THAT'S A LOT! AWESOME!"
Another noob moment: When I was a low level I was used to getting accomodation from NPCs for free, so when I got a level up and they said I had to pay gold for it I started ranting, on World chat, about how it was unfair. The only good part is a fellow noob was agreeing with me.
And one time when I didn't know what K or M was someone was selling something with a fancy name for 1M, so I tried to buy it with 1g...
Then there was a time when I didn't know house furniture took up more space than regular items so I saw on world someone was selling a free bookcase, so I PM'ed them, we met up in Kelan, and I didn't have enough space so I began complaining how it says "It's full" until they explained. I never got my bookcase, either...
Well that's it so I don't take up too much space...