Heavens to Guinevere.
2 seconds sound clip from Snagglepuss - Knights and Daze (S1E10).
You can hear this line at 00:05:46.966 in the Blu-ray version of the episode.
Quote context
[...]
- Then by cloudy skies, I challenge thee to a joust!
- Joust a minute, joust a minute. Joust, what is a joust?
- By thunder, tis not a cricket match.
- Yon screwball in ye side pocket.
- Giddy-up, horsey! Whoa, horsey! Come back, even.
- Here's a joke for ya, funny fella. I'm sure you'll get the point.
- Exit, hopin' for the best, stage right.
- Heavens to Murgatroyd, I've been skewered.
- And now my trusty sword shall finish thee.
[...]