Gee, dear old flabbergasted Dad, it's Santa Claus and his helper.
8 seconds sound clip from the Yogi's First Christmas (1980) movie soundboard.
You can hear this line at 01:10:39 in the Blu-ray version of the movie.
Quote context
[...]
- Look, dear, old Dad, a reindeer.
- So it is, my boy, just like the kind that pulls Santa's sleigh.
- How do you like that? Someone tried to lasso that poor creature.
- Snively? Come on, dear, old Dad, let's get him.
- All right, Snively, come out of there.
- Ho, ho, ho! I've been called Santa, and St. Nick, but no one's ever called me Snively.
- Gee, dear old flabbergasted Dad, it's Santa Claus and his helper.
- Ha-ha-ha. Will wonders never cease? What are you doing here in Jellystone, Santa?
- You know, Santa, old pal, we're throwing a party tonight at the Jellystone Lodge.
[...]