Maybe bears like jam.
5 seconds sound clip from The Yogi Bear Show - Tally Ho Ho Ho (1958) - S01E07 TV Series.
You can hear this line at 00:05:36 in the Blu-ray version of the movie.
Quote context
[...]
- Nuts and berries? You call that grub, bub? You're supposed to build me up, not tear me down.
- How about some nice mustard custard?
- No!
- Eh, how about a bowl of chili?
- No!
- Oh, brother, like I could starve in this joint.
- Great gubs of goodies! Ham, chicken! Boy, oh boy, oh boy, oh boy!
- Excuse me. May I borrow the jam?
- What're you doing in there, bear?
- Oh, you know the old sayin', Feed a fever.
- Fever? Get back to bed, you. I-I'll call a doctor.
[...]