damn... pretty immature crowd those friends of yours are... (no offence). I hope they're not serious.
My friends would never say that. Once in a while we all (including I) make fun of it. However we do it for jokes.
I remember how pessimistic my friends were when I told them that I was buying this 300CD. Then after they saw it in person, most of 'em just fell in love with it... especially the interior.. there's no denying that it's a Mercedes
If I was you I would just smile