I'm fine with your dad thinking that. It's funny. Mike's new hairstyle will probably resemble Nancy's perm, and that will make the s2 joke of Steve thinking Mike was Nancy when he woke up, even funnier now.

Your dad is an unintentional comedian. Give them my thanks and please let them live in ignorance until some official footage or photo of Mike comes out.

I mean, I get why he said that. He didn't necessarily say he looks like a girl, he just joked about it. It's fine.

Lol I agree with @Common Threads - it does look like Nancy's xD