You lie and say you are shopping for a friend

"Ok sure yell if you need anything." He states and goes back to reading his newspaper. You look around and find tons of possibilities but you soon realize the only sizes you find are regular and queen. You have no idea how big queen is or how small regular is so unless you ask you might as well buy both. You do find a chart that has sizes from all countries for shoes as many here must be imports and you see men's size 10 is basically the same as women's size 12 so you know that should fit. Finally you realize you have to make a decision. Do you ask for help? Buy a regular, queen, or both?