jellybrain

Noun

 * 1)  A muddled thinker; a stupid person.
 * 2) * 1986, Ben Elton, Richard Curtis,  (TV episode)
 * BLACKADDER: Where the hell's that cretin Percy; you haven't seen him, have you? BALDRICK: Yes, my lord! He's hiding in the box! BLACKADDER: Come on, jellybrain. Hurry up, otherwise we'll miss the tide!