I have a butt plug that I use probably once or twice a week. TW likes me to wear her panties around the house and she always makes sure to stick a plug in. The only problem is that no matter how tight the panties are (we've gotten size XS in Under Armor boyshorts) the plug wants to slide out. We've tried sticking the plug in and wiping most of the lube away thats left around thinking the lubrication glides it out, to no avail. I do not think I am to loose for the plug because my ass is tight with a finger in, and this plug is about 1 1/2 inch diamter, maybe bigger. Is there anything we can do to stop it from sliding out short of buying an inflatable?