Penny / Kaley Cuoco is a dingy nut. Getting a tattoo of her marriage date on her upper back then divorcing the guy after several months then changing said tattoo to a moth and going out with oddball guys only to have them or her move onto someone new.
Sheldon thinks she has had 31.5 partners, rounding them out to 32 with 33 still able to be found as the day is young.
Plus plastic surgery on her face and er... bosums a few times and spray tans and way too much makeup too. Her body has changed as she has mentioned and we have all seen over the years.. She gets a million dollars for each episode!