I work from home, and a large part of my job is to call potential clients and get them to sign on with us (not a telemarketer, I promise). I have a desk set up in my dining room and let my cats jump up and hang out with me all the time. It keeps me from getting too stressed. So I'm leaving a voicemail for a potential client, and the voicemail itself is fine. I click over to another screen to look at something while I'm talking, and then my cat jumps up. I finish the voicemail and tell my cat, "Dude, I want to look at your skin." I reach over and start to push his fur out of the way but he starts to pull away, so I say, "Relax about it." And then I kind of froze. I realized I hadn't ended the call. So this client had a perfectly professional voicemail, then me saying, "Dude, I want to look at your skin, relax about it." Fingers crossed no one actually listens to that voicemail. I don't want anyone thinking I'm a serial killer.

TL;DR: I accidentally said the creepiest thing at the end of a voicemail