In my case, in most instances, I find the exact OPPOSITE to be true! Going into Hot Topic, the people in there are always friendly toward the Muppets (probably because they know they'd fit right in. LOL, j/k) and they feel the exact same way I do: that they should carry more Fraggle Rock shirts in adult sizes.
One tiem while in the mall, I saw this one guy walking through the halls wearing a Muppet/Weezer shirt. I immediately walked up to him. As I approached, he just looked at me like, "Oh, brother. Here we go again! Well, let's get this over with." So, when I gto to him, I asked him where he got the shirt. He immediately looked at me with an expression of pure shock! He was fully expecting me to harass him.
In fact, the only place I got the "freak" look, and speach, was in Toys 'R' Us. A TOY STORE! Anybody in there is immature, because they are buying TOYS! TOYS! Muppets are really just glorified toys, why would I be treated like a freak in a toy store?