"Now, wait a minute. I'm not the one who's tricking anyone. It seems to me that I just walked through your office door where you were engaged in a particularly rousing rendition of a 1950s samba and I was about to introduce you to President Bartlet and you somehow found a way to change and get past both myself and the president."

While Sam is willing to concede some of his own absent mindedness, he isn't about to accuse the president of such. Not when they'd been standing right there.