Sheldon gets a lot of negative responses about his physics lecture.br Meanwhile, the gang is enjoying the tweets of the people that attended Sheldon's lecture; all negative towards him from Twitter.br S04E14 - The Thespian Catalyst episode.br br Follow us on Instagram:br Shelly&Penny: br br #ShellyPenny #SheldonCooper #KaleyCuocobr 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).