word constipation

When a word or group of words is on the tip of your tongue, but you can't get them out.

Kyle: "Why aren't you talking?"
B.J.: "I'm suffering from a little bit of word constipation."

Kyle: "You still haven't said anything."
B.J.: "I'm word constipated, damnit!"

by bj and kk December 9, 2007