"I think I have a flat tire"

So, I'm sure most of my family knows this already but incase some of the funniness was lost throughout the story telling let me tell you what happened....
I was driving home from school the other day and it was raining out. I kinda felt that my car was driving funny, so when I got to my apartment, I looked at my tires. Well I have no idea about cars, tires, oil and all that jazz; however, it seemed to me that my back driver side tire was flatter than it should be. I called my mom, who told me to call my dad, who told me that I should go fill it up with air and take it to get fixed. Well the place I felt comfortable taking it to was WalMart in Brownsburg just because I know how to get there and it's only a 20 minute drive. I called them up they closed at 7, it was 6:10 already. I decided to take the chance and try to make it. But because I didn't know how on earth to fill up my tire with air...I just forwent that and went to WalMart directly. When I got there, I told the man that ' I think I have a flat tire, can you take a look for me, its just driving kinda funny"...he responded by saying "what do you mean driving funny", "uhhh, it just is? can you look for me, I can't explain it" He MUST OF thought I was a dumbass. I tried to explain that I had never had a flat tire before, I don't know what they look like, I am from a different state and really have no idea who to ask on these matters. I also through in, "I dont know much about cars, I'm one of three girls". Well apparently it was the valve stem that was the problem and intead of having 32 lbs of air, mine had 8. Go Me! I really did have a flat tire, I feel smart! For some reason the guy did not charge me, I dont know if he felt bad because I looked like a dumbass or what, I truely had papers because they were on warranty still-- but he didn't know that because they were in my purse the entire time and he didn't give me a chance to tell him. Lesson learned...Christina knows what she's talking about when she 'thinks' she has a flat tire. Oh but I still dont get this concept of driving on the rim and how you know if your doing it, I do know now, DO NOT DRIVE ON THE RIM, but I don't know if I'd know if I was doing it....does that make sense? Ok...Briefing time I have a fun contracts case about salmon and fishing...ok so it's not actaully fun but I do have to brief it.......LOVE