Think, nasty, think, nasty, think nasty.
7 seconds sound clip from the Frosty the Snowman (1969) movie soundboard.
You can hear this line at 00:13:19 in the Blu-ray version of the movie.
Quote context
[...]
- Are you coming to the north pole, too?
- I'm sure my mother won't mind, as long as I'm home in time for supper.
(Steam train whistle blows) (2)
- Think, nasty, think, nasty, think nasty.
- He'll be back again some daaaaaaaaaay.
(Steam train whistle blows) (3)
- Are you cold, Karen? Now that's a silly question. You wouldn't be sneezing if you weren't cold.
- Well... just... just a lit... little.
[...]