Hi there!
There are many feminisation files and so on but what i am looking for is a file that tricks you into panties without the mental changes. So my idea is that when you wear panties your penis and scrotum turns into a pussy. The feeling of the panty makes you very horny and maybe precum is your pussy juice. The feeling of wearing and masturbating in panties should be so great that you want to wear them more often or continously. A nice addon would be extremely hard and sensitive nipples that nearly ache because they are so hard (like when it´s very very cold). And touching them gives you more "pussy juice" and makes you even more horny and want to wear the panties more often.
As i can´t find something like that on wmm i thought i share this idea with you. :)