Penny`s new boyfriend Zach wants to see guy`s new experiment.<br />S03E23 - The Lunar Excitation<br /><br /><br />#ShellyandPenny #KaleyCuoco #TBBT<br /><br />DISCLAIMER:<br />Some of the links in description may be affiliate links. <br />This means that if you click on one of the links and make a purchase, <br />I may receive a commission (at no extra charge to you).