Not particularly well

You make another attempt to grab the raygun, this time focusing on grappling Zoe and forcing her to give it up but the pendulous weight of your unsupported breasts pulls you off balance and you stumble to the side missing her by a country mile. You trip and fall on your face. Cursing, you attempt to right yourself only to trap your oversized balls between you thighs sending you back to your knees and prompting a fresh peel of laughter from your sister.

"Oh this is too much fun" she giggles raising the gun again "Let's see what shall I improve next...?"