I would certainly enjoy meeting a single woman (MILF) who enjoys filling her ful back, snug panties with a mega load of sticky, crackling shit, especially while wearing thin stretch pants, dress pants, or bathing suit.

Starting out as a Fetish Pen Pal situation talking about our shared fetish; sharing fantasy stories. A woman who knows other women that poops their pants / panties with her. 

 The fantasy part of this is in meeting her, pooping pants / panties together, and even meeting with her few female friends for pooping pants / panties together at a secluded location. Feeling and fondling one another's load, squishing our poop around in our pants / panties.

Meeting that one woman who would love to open her legs with loaded pants, with a slit in the fabric, sliding my cock through the mess and slowly fucking, while whispering about what it is we are doing...

during which time that we are engaged in poopy sex, her girlfriends enjoy pooping their pants / panties around us. Near us so we can hear and get a glimps of their crackling package loading between their legs. Their expression as they enjoy the filthy act.