And this is why I look so young and tight

That faithful day, Tim was standing in front of his bed where a beautiful young blonde woman was posing, shoving her tight little bum almost in his face.

"And this is why I look so young and tight! Any questions, son?" she asked in a beautiful soprano voice.
"Dad, if I had not seen you change a few minutes ago, I would not believe it! But why this? And how tight are you really?" Tim went on.