Swopping knickers over

so lucky friends wife likes the same black hi leg nylon nix - she has around 8 pairs so easy to swop over, took thee pairs back last week two dirty on [air spunked in many times over the months. A clean pair I put on and shot spunk in the crutch.
Took back and swopped for two new pairs of used with her scent on them and took a clean pair and swopped over. So reckon last friday she would have worn the spunked in pair - which were a size 14 she now buys 16 - I wonder if she realises her 16's have gone to 14 over night. Her worn were lovely to smell with pee and sniffed as I came in her clean pair I just got - shouldnt do it buy I also spunk wifes cotton ones too did this morning always use nix or a bra if poss to wank with - so always looking for other nix to use from hamster viewers - have sis laws and some off hamsters nix - always use i wank every day