jazz hands
US /ˈdʒæz ˌhændz/
UK /ˈdʒæz ˌhændz/

1.
jazz hands, gest rąk
a gesture in which a person waves their hands in front of them, typically with palms facing forward and fingers splayed, often used to express enthusiasm or to add a flourish to a performance
:
•
The performer ended the song with a flourish of jazz hands.
Wykonawca zakończył piosenkę z rozmachem jazz hands.
•
She gave a little bow and some enthusiastic jazz hands after her presentation.
Po prezentacji wykonała lekki ukłon i kilka entuzjastycznych jazz hands.