Jiu-jitsu, Bubble Wrap, And Yoo-hooyoung Sheldo... Guide

Watch Sheldon's hilarious attempt to use physics for self-defense and the Cooper family's struggle with his unlikely bully:

In a bid for safety, Sheldon wraps himself in bubble wrap to cushion potential blows, which is quickly discovered by his parents during breakfast. Jiu-Jitsu, Bubble Wrap, and Yoo-hooYoung Sheldo...

He attempts to practice on his friend Tam, but his lack of physical strength makes his "inertia" moves completely ineffective. Key Themes and Trivia Watch Sheldon's hilarious attempt to use physics for

George Sr. (played by Lance Barber ) admits he was once a bully, a meta-nod to Barber's previous guest role as Leonard's high school bully on The Big Bang Theory . (played by Lance Barber ) admits he was

George Sr. and Herschel Sparks find common ground over a beer, deciding to lie to their wives about a "deadly fight" they had to avoid further domestic conflict.

Because Mary forbids Sheldon from hitting a girl, he tries to pay his sister Missy $4 and TV privileges to do it for him; Missy ends up befriending Bobbi instead.