My Master would occasionally have friends over in the evening. These guys were doms and they would bring their submissives or slaves with them. I would have to answer the door wearing nothing but my collar, fishnet stockings and high heels. Being the only person naked I would be embarrassed and humiliated, but I did what my master told me.
When the men were comfortable, the other women were told to strip and help serve snacks and drinks. As I brought trays and drinks around my nipples were grabbed and pulled and my ass was smacked. Being a good sex slave I just said, "thank you sir". At some point my master, to demonstrate what a good slave whore I was, would make me kneel in front of one of the men, unzip his pants and suck his cock. I had to make him cum and swallow every drop while the others were laughing and calling me a pig slut. He offered me to any of the other doms wanting their balls licked and cocks drained.
After serving everyone that wanted blow jobs, he had me get my enema bag filled with warm water and kneel in the middle of the room. He would let one of the other doms put vasoline on the tip of the tubing and insert it in my ass. Holding the bag up they would fill me and make me hold it in. I would then be allowed to run to the bathroom to relieve and clean myself while they continued to talk and drink. I was humiliated. They wanted my ass to be clean and ready to be used.
My master had a massage table with large round holes cut out for my tits and cunt. I had to lay on the table face down and he would tie me down. My big tits would hang through the hole and he put nipple clamps and weights on them to stretch my saggy udders. Then he would put a vibrating butt plug covered with vasoline up my asshole. My asshole is very tight and it would take a while to open up. The guys would have fun using the remote and watching me squirm. After it was sufficiently open he replaced the vibrating butt plug with a big pig tail butt plug. Guys would be pulling on my udders and slapping them calling me a fat cow. They reached under the table and put their fingers in my cunt, and all slapped my ass. My ass was red and stinging, but I would just say, "thank you sir".