What does "I needed to buy combs for my girlfriend" mean?

Question: What does "I needed to buy combs for my girlfriend" mean!?

In the book "Fablehaven: Rise of the Evening Star" on page 28 it says quote: "Pawn shop!. I had to buy combs for my girlfriend!. Kendra smiled getting the reference" Thing is I don't get the reference, what is it!?Www@QuestionHome@Com

Best Answer - Chosen by Asker:

He's referring to 'The Gift of the Magi', a story by O!. HenryWww@QuestionHome@Com

I'm assuming it means "I had to buy something sexual for my girlfriend at the naughty store!." "She understood"Www@QuestionHome@Com