Put orange juice back into little bottle, being friendly and good-natured (6)
I believe the answer is:
jovial
'good-natured' is the definition.
(thesaurus)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for jovial that I've seen before include "Hearty and cheerful like Jupiter" , "Jolly, good-humoured" , "Convivial" , "Full of cheerful good humour" , "Genial, joyous" .)