My Six Year Old Daughter Said That She Had A

My six year old daughter said that she had a bad thought after she was out to bed. She said she thought about licking a birdie. I asked her why and she said she didn't know. Then she said that she saw a girl lick a boys face on tv. I asked her the questions such as: has anyone asked you to lick their birdie? Has anyone asked you to look at their birdie, etc. she said no to all of the questions. What should I do?