I didn't expect that one!

Today, Sam and I were in the game room, like we always are before our classes start. We were talking to Foster and Kristen, brother and sister, who I met through Sam. Foster was in the middle of telling us how much of a bitch his last girlfriend had been when the maintenance guy turned on the vaccuum. So, since we couldn't hear what he was saying, he proceeded to move his mouth with the words and act out parts of what he was saying. When the vaccuum turned on, I looked away from him, assuming that he would stop talking and wait for the guy to finish before continuing. I just happened to catch some movement out of the corner of my eye coming from his direction, so I glance over at him. I do this just in time to see him humping the air... apparently he was showing us what his girlfriend did without him while they were dating, but I think he just wanted to hump the air... that's my opinion. So,... I was left with a mental image that will probably haunt me for the rest of my life. "thanks Foster!" *stabs self in the eyes, trying to remove the image, but fails*