I have lately started to using my friends cum to use as I lubricant when having sex with my wife. She doesn't know that I am using cum to lubricate my cock before I penetrate her pussy. I pre soak my cock with his cum and I insert it in. I have once turned the condom inside out and fucked her hard with it. The fun of it is amazing I must say and I cum so much inside her. The sex with another man's cum and fucking my wife is so hot. She get so wet and so slimy its amazing.