Просто это английская идиома. У нас не распространена. http://idioms.thefreedictionary.com/He+puts+his+pants+on+one+leg+at+a+time He puts his pants on one leg at a time. Prov. The person referred to is only human.; The person referred to is an ordinary person. Sue: That man is my favorite movie star. Don'tyou think he's just divine? Jane: Oh, I don't know. I imagine he puts his pants on one leg at a time.
http://idioms.thefreedictionary.com/He+puts+his+pants+on+one+leg+at+a+time
He puts his pants on one leg at a time.
Prov. The person referred to is only human.; The person referred to is an ordinary person. Sue: That man is my favorite movie star. Don'tyou think he's just divine? Jane: Oh, I don't know. I imagine he puts his pants on one leg at a time.