soiled undies can be sexy at any time of the day. I have cummed in mine when secretly reaching into my pants and blowing the load, keeping it there until I get home. So kinky knowing that I have a load in there. My wife, being swingers, loves having guys fuck and cream her. Then dressing with their cum in her pussy or ass and leaving it there until she gets around to showering. I find that sexy knowing she is loaded with one or more guys cum... So, soiled panties or undies can be fun.