Husband saying new things..

My husband is not a sexual guy. For some reason he has been pretty vulgar recently and saying new things when it comes to sex. For example, when we were about to have sex the other night he said “can I just masturbate and go in your mouth instead?” I looked at him like I was shocked and confused and he said “it was a joke”. I felt like it wasn’t though by his tone and demeanor when he said it… it was odd. He has said some other stuff recently too that has caught me off guard. In the three years we have been married he has never been like this. It gives me an odd feeling..