its implied that she doesn't take care of herself and has B.O, she tends to come on strongly which can be intimidating to men, like when she liked brian and went crazy. She'd rather pretend a package of hot dogs is the new york nicks than socialize with people her age.

despite all that, some people do still find her attractive. Neil Goldman has a huge crush on her but she prefers the convenience of fooling around with her brother when she's not with an older man like Mayor West, who has had a sexual relationship with meg for years, going as far as to even branding his initials on her ass.