Oh fuck, I just did something really stupid.
I was trying to invite a friend of mine over to my house tonight via MSN, found out he wasn't doing anything, arranged for him to bring over Super Smash Bros' and a Wii and stuff, then I asked him what time I should pick him up. He said "you have a car?".
Turns out I'd been speaking to someone completely different (Remember Dudefather who used to post on these boards?) who I'd only ever spoken too once or twice before over MSN a couple of years ago.
Apparently he though I was someone else too. It's just a good job I asked if I should pick him up or he might've shown up at his friend's house later on tonight