Absolutely certain I would enjoy the manual manipulation nipple discovery method a lot more than using ice cubes!
Even though there is a much higer risk of getting slapped, LOL.
Find the Nipple. Level 1, Easy
While visual confirmation seems positive in this example similar to the results of the ice cube method,
manual manipulation would absolutely guarantee confirmation of nipple location!
And I thought I was using my time better by evaluating home automation when I couldn't sleep?