I got caught in a "Three's Company" situation.

I drove down to my parents home in the Southern U.S. for Spring Break. Two really attractive girls that were in my social circle asked if they could come along and split the cost of the fuel so that they wouldn't have to pay for airfare, because they wanted to rent a hotel and spend Spring Break in my hometown.

I went ahead and, without asking my parents, volunteered to put them up at my house. They were ecstatic, no airfare, free place to stay, warm beaches.

10 hours of driving later, we arrive at my house early in the morning while it's still dark. My parents at this point were only expecting me to show up, mind you. I offer them the pool house (yes, we have a pool house) to stay in because it's separate from the main house and has its own bathroom. What it doesn't have is beds, so I take out two air mattresses that are stored in the pool house. No automatic pump to inflate them, so we take turns inflating them with our mouths some that none of us pass out from doing it all ourselves. In the meantime, the two people not inflating are lifting heavy chairs and tables out of the way to make room for the mattresses.

By now, it's early morning and the sun is out and my parents have gotten up to have breakfast. My mom sees my car, realizes I have arrived, checks my room, see's me not in it, and walks out to the pool in case I'm taking a quick swim. She's approaching the pool house and what does she hear?...

Girl 1: heavy breathing> Oh god, this this is huge, it's making me dizzy...

Girl 2: <grunt> <groan> (her, with teasing voice:) You're making me do all the hard work, aren't you.

Me: <grunting> You better believe it <more grunting> You practically came for free with me, you better earn it.

Girl 1: <heavy breathing> I can't any more, let's switch places

<One mattress is already filled up>

Girl 2: Let me take a break, I just want to lay down on top

About 10 minute later I invite them into the main house for breakfast and to introduce them to my parents and tell them we have 2 house guests.

...Daggers from my mom's eyes. My dad is visibly embarrassed but a kind of paternal pride is welling up and there might be the start of a misty tear in his eye.