sganasciarsi dalle risate bedeutet auf Englisch

laugh one's head off▼(laugh uproariously)
verb
[UK: lɑːf wʌnz hed ɒf] [US: ˈlæf wʌnz ˈhed ˈɒf]

roar [roared, roaring, roars]▼(to laugh in a particularly loud manner)
verb
[UK: rɔː(r)] [US: ˈrɔːr]