Mature tits can sag a bit. So that they still look nice and round and taut - there are certain types of brassiere. In red and black I test my tits holder on the exercise bike and my stomach makes a super sexy role. It's a lot of fun in lingerie on the bike and when the bra tightens the boobs a bit - then I can take it off and my drooping udders get air and the nipples have room to get hard. When you look at your tail, it will also be hard and stiff.