ColeridgeThere was a titter of ... delight on his countenance.
(slang, vulgar, chiefly in the plural) A woman's breast.
1995, 21 February, Agent_69 username, big breast video list, Flesh Gordon 2 - I remember that this one was chock full of big titters. Many of them looked like the natural variety, as well.
1999, 13 March, MrMalo username, Re: State Capitals, there was an old lady from raleigh who was so doggone nasty by golly just squeezin her titters you'd pick up some critters and bathe twice in one month for your folly
2013, Dorothy St. James, Oak and Dagger, Berkley Prime Crime (2013), ISBN 9781101619797, unnumbered page:“The poor dear, even her titters are weighted down with melancholy,†Pearle said to Mable.“I don't know what you're talking about. Her titters look perky enough to me,†Mable replied.