Stephen Hawking's Shampoo

This is a pun. Head 'n Shoulders is a popular brand of shampoo. The joke plays on the similar sound of "head 'n shoulders" and "head and bolts", implying Stephen Hawking might be interested in bolts due to his scientific background.

• Shampoo
• Head
• Stephen Hawking
• Hair
• Shoulder
• Science

• What is Stephen Hawking's favorite song? Head, shoulders, screws, and bolts.
• What was Stephen Hawking's name before he got his disease? Stephen Walkins.
• What is Stephen Hawking's favorite snack? His shoulder.
• What did the bottle of conditioner do on the toilet? Shampoo.