on the ball: see Kiddushin Daf 2 Amud 2 – the mishna says HaIsha Niknis to teach us that this “acquisition” requires the woman’s consent.
Goldenpupik: your husband’s diuk does not make sense. ishto k’gufo, as you said, means his wife is like his body. So a husband and wife are like one body. So of course a husband’s body is like his wife… they are like one body! I assume (and everyone knows what happens when you assume) that the diuk was made in jest; I’m just pointing out a response…