Could be Thor the women not Thor the real Thor is really a clone only female not male.
Thus when she walks up the hammer thinks oh its you momma , ooops I mean daddy , I mean omg and goes back to bed and sleeps off the hangover from just bad story telling.
So maybe just maybe Thorgirl is his clone and we can say Tony made her just in case or by mistake like hitting 2 on the photo copy instead of one. Warning extra copy will result in a back fire and become a female beep.
So as Thor is saying holy cow batman I just do not feel worthy.
Female cloned Thor will say hey sweety pie I got this and lift the hammer and bam. Well not really take the power but just go about life as normal because hey , its female Thor. Before you get all upset and say no... Leave his clone alone , she upsets easy you know.