She answered the phone and, to her great 'joy', heard her son's voice on the line. [=she felt very happy when she heard her son's voice]
“You've spent hours looking for it. Any 'joy'? [='luck']” “No 'joy' whatsoever, I'm afraid. I can't find it.”
They were 'shouting/jumping for joy'. [=they shouted/jumped because they were very happy]
(..) This is the men's room. That is the weirdest thing you have ever said. It's fine. It's okay. Look, it loves it here! It's dancing with joy! Uh, uh, uh, uh. I'll be right back with its door key. ( laughs ) That's a cute little (..)2001 Monsters, Inc.