What sound would that make?..lol. I can almost see the super slow motion- Super Bowl caliber- of boobs making waves that bounce forward and backwards...tidal boob waves. Boobies almost becoming one as they smash into each other,flatten out. Whew! the recoil! Both woman hurled airborne. Luckily,mattresses are used on this Stan thought experiment. Einstein had his,I have mine..
And you thought breaking the speed of sound was noisy.