Originally Posted by Harmon

Of course you did.

People tend to mis-associate words with what they are most comfortable about in their day to day lives. Like one, like you may misconstrue the word sack with crack.

You hear them both daily but gravitate towards one or the the other. In your case, probably sack.

Here's a link to the Wikipedia article about the mental condition: http://goo.gl/CGJoHW