Last year my wife (45, 5'8, white, blonde milf type) and I (43, 6'2, Mexican, average build) went to a Christmas party for her job where the company hired a guy to play Santa and take pictures. After having more than a few drinks, my wife says she wants to take a picture with Santa. He looked just like Santa, old (late 60ish) and fat with white hair, but fake beard. He noticed he was very loud and abnoxious (i think he was drinking too) and being a typical introvert, I wanted to avoid him; however my extrovert wife eventually convinced me. The whole time, he was eyeing her and being touchy-feely with her. He asked if she was a good girl or naughty this year. She laughed and glanced at me and played along by flirting back calling him Bad Santa while I just stood there feeling awkward and embarrassed. For context, she knows I like when she flirtatious with men, but I wasn't expecting her to do this at her work Xmas party around coworkers....and with an pervy old Santa. I went unnoticed until he turned his attention to me. He asked "and who is this little boy?" I felt my cheeks blush and my wife introduced me. He then asks me if my wife deserves a present from Santa. Catching his insinuation, I blush harder and don't know what to say. I couldn't believe this asshole mall Santa was trying to cuck me in front of everyone. My wife then asks him for a picture, and he agrees, but makes her say "Please, Santa" first. When I try to discreetly stay out of camera view, the photographer tells me to get into the picture. I was about to decline when my wife blurts out "It's OK, he'd rather just watch" and gives me what she thinks is a subtle wink (by now she's more than tipsy). Bad Santa practically laughed in my face. I end up getting in the picture but am standing behind her awkwardly while he has his arm around her and holding her hand. He then asks her if she wants a picture of her sitting on Santa's lap. She knows I'm embarrassed but doesn't seem to notice (or care) at this point. She squeals "YES!" and is still holding his hand as he leads her to his chair. He looked at me and said "only her" while laughing. I say that fine with me. She sits on his lap for the picture and I see them whispering to each other and laughing. He has one arm around her and the other hand on her leg. She continues to sit there after the picture which looks more and more awkward with each passing second. The whole time I can't believe my wife is basically outing me as a cuck to her coworkers. He hugs her, then waves and laughs as we walk away. When I ask later what they were whispering, she said he asked if I was a cuck. She told him we are talking about it. He proceeded to offer to "help". He then told her to ditch "your elf dick hubby" and be a naughty girl for Santa at his hotel room (he said he was from out of town). She said she laughed it off and politely declined. After the party, she said she wanted to go with friends to a bar. I was partied out so I UBERed straight home and fell asleep around midnight. I partly woke up when she came home around 3am. She was in a good mood and I could hear her humming Xmas songs quietly. In the morning, I asked what she did after the party. She was vague, saying it was boring at the bars and blaming her lame coworkers. When I asked who went, she paused and said "I don't think you met them". Now I always had a feeling that she's hiding things, particularly that she is fucking other men behind my back. I tell her it's ok if she is and to tell me, but she denies it saying she will tell me if she does. If I had to guess, I'd say she went to the hotel room of that old, fat, obnoxious Santa after the party. He was probably on top of my wife, balls deep and pounding her married pussy while laughing about her elf dick hubby at home.