Johnny always felt uncertain in the size department, so he picked up a penis pump for his pecker. Johnny got in his indoor teepee and started inflating his cock with all his might, but all that racket tipped his stepmom Natasha off. She peaked through the teepee and saw Johnny pumping his pecker. Johnny was humiliated but he asked his stepmom to size him up, so he could know once and for all. Natasha helped him get it a little bit harder so she could properly test it, for science, of course! Johnny's stepmom sucked his knob to get it big & hard and then used her fat, natural titties to jerk her big boy off. Johnny got real excited and fucked his stepmom hard, making her ripple and jiggle everywhere. He squeezed her massive boobs as he pounded away with his newly discovered big cock. Natasha must've orgasm several times from her big boy's banging. Then it was Johnny's turn and he filled his stepmom's pussy up to the brim with a hot load.