What is Tittens?
1.
The act of warming ones hands beneath one's breasts. Can be own or someone else's.
"I forgot my gloves, c'mere. Mmm, tittens."
See
2.
Little Boobies. More appropriate when describing little underage breasts.
Regenald: "Dude your little sister just hit on me."
Megosh: "Did she to show off her tittens."
Regenald: "She tried."
See