She turns on PLEASURE GROWTH MODE

As Samus is browsing the experimental settings and modes, the pleasure growth mode stands out the most to her already horny self.

She then enables it feeling a sort of wave of electricity going through her whole body, not painful, just enough to put you on alert. As she looks down, she sees nothing has really changed. But she expected that as she goes for the real test.

She then goes to take off her suit, which is already straining from her beach ball sized ass, but then decides it would be fun to grow out of the suit. As she turns to start her "test", a shift in balance causes her to fall on her ass and moan in pleasure as her ass shoots out another 2 ft as she bounces some on her now yoga ball sized cheeks.

Samus then realizes that as soon as she turned on the mode, she had started growing due to the tightness of her leotard suit digging into her vagina giving her background pleasure she had tuned out and that's why she lost her balance.

She then looks back at her ass which is still growing slowly, about a inch per minute it was expanding and approaching the size of beanbag chairs as she moans in feeling the tightness of the leotard grow ever tighter digging in even further.

Samus bites her lip in pleasure as she enjoys the growing sensation even from a non-sexual standpoint as it felt like she was being massaged internally as it stretches out causing her to relax.

Finally after what seemed like a eternity, the leotard snapped with her ass surging out a final 4 feet for each cheek to be around the size of a arm chair and Samus screaming in pleasure.

Samus then catches her breath slowly but surely and decides.....