我那抹了黄油的屁眼打屁股，而一根很长的假阳具在我体内插入

the melting block of butter goes in melts slowly and makes my butthole burp and talk while my long dildo slides deeper and deeper inside me opening my inner sphincter and pushes through into the colon. enjoy the butterburps and lots of melted butter dripping out of my gaping butthole. hear the munching and burping noises during the exploration.