Related Clues:

• Shriek from Michael Jackson
• Doing much more than cqtm
• Quick 'ha ha'
• E-mail giggle
• 'Unlikely!'
• Response to a site gag?
• Giggle in an IM
• Expletive expressing doubt
• Twitter titter, and then some
• "Ri-i-ight!"
• "Let us bray" beginning?
• 'Funny vid, thx'
• Texter's 'That's funny'
• -- -haw (donkey's sound)
• "I sincerely doubt that!"