titties (n.) Look up titties at Dictionary.com
1746, tetties (plural), a nursery or dialect diminutive variant of teats (see teat).
Margery. Come, be quite;--be quite, es zey, a grabbling o' wone's Tetties.---Es wont ha' ma Tetties a grabbled zo ; ner es wont be mullad and foulad.---Stand azide; come, gi' o'er. ["Exmoor Courtship, or, A Suitoring Discourse, in the Devonshire Dialect and Mode, near the forest of Exmoor," 1746]