laugh your head off

US /læf jʊər hɛd ɔf/
UK /læf jʊər hɛd ɔf/
"laugh your head off" picture
1.

reírse a carcajadas, partirse de risa

to laugh very loudly and for a long time

:
The comedian was so funny, we were all laughing our heads off.
El comediante era tan divertido que todos nos estábamos riendo a carcajadas.
I told him a joke and he started to laugh his head off.
Le conté un chiste y empezó a reírse a carcajadas.