Based on the context and the answer, generate a question. 

Context: No pain and rock music at the dentist . Best trip I ever had . I also received three keychain tooth shaped floss . I will definitely put them to great use . Although the left side of my mouth , cheek , and nostril is still numb and I have a funny grin .

Answer:

They got some free stuff .



Why did the narrator enjoy the dentist so much ?