It's that blockhead Charlie Brown's fault. If I hadn't felt sorry for him, this would never have happened.
9 seconds sound clip from the A Boy Named Charlie Brown movie soundboard.
You can hear this line at 01:06:29.769 in the DVD version of the movie.
Quote context
[...]
- That scoundrel, Charlie Brown, lost my blanket.
- All right, you stupid beagle, snap to it.
- You've been no help at all in finding my blanket.
- Some hunting dog. The world is ending, and he can't even help find a blanket.
- Never feel sorry for blockheads!
- I'll never forgive that Charlie Brown.
- Good morning, Linus and Snoopy.
- 'Snoopy.' S-n-o-o-p-y. 'Snoopy.'
[...]