Hawking's Favorites

Listen up, buttercup. The joke is a play on words. "Shoulder" refers to both a body part and also kinda sounds like "should her." The joke says that Stephen Hawking's favorite food is "his left shoulder," which is a dark joke because Stephen Hawking suffered from ALS. The second joke is that his favorite robot is his wheelchair which "should her" around. People with ALS are very smart, unlike you.