Why do you like having girls sit on your lap, or girls, why do you like sitting on a guys lap?

Guys, why do you like to have a girl sit on your lap? Does it ever hurt if your girlfriend is bigger or around the same size as you? I always feel like I'm going to hurt the guy by sitting on his lap, but all my boyfriends always loved when I would sit on their laps, especially in public. Why?

Girls, why do you like sitting on a guy's lap? I personally liked it when I would and they would put there arms around me and it was kinda a good way to cuddle in public without being overly awkward. plus I just liked having his arms around me. I find that to be one of the greatest feelings ever.
Why do you like having girls sit on your lap, or girls, why do you like sitting on a guys lap?
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