Why would a person say this at work to me and coworker?

I was sitting on the floor next to coworker who was sitting on his chair and taking and answearing calls then someone (who my coworker knows well) came and looked at us and said to him: "finally she on her knees for you" was weird tbh hsha like why would he say something like this? and sounds bit sexual

Why would a person say this at work to me and coworker?
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