"Is that book for sale?"
"Oh, no, I'm sorry sir, it's just for reference." He asks to see it and, being helpful and knowing some read better english than they speak, the salesgirl hands it to him.
With a wink and a smile, the man slips it into his breast pocket, and walks out of the store. The sales girl is dumbfounded. "Oh, um, Sir? Sir?"
Neither the japanese man, nor the sexiest size chart on earth, were ever seen again.