someone's heart is in their mouth

US /ˈsʌm.wʌnz hɑːrt ɪz ɪn ðer maʊθ/
UK /ˈsʌm.wʌnz hɑːrt ɪz ɪn ðer maʊθ/
"someone's heart is in their mouth" picture
1.

het hart in de keel hebben, erg nerveus zijn

to feel very nervous or frightened

:
When the roller coaster started, my heart was in my mouth.
Toen de achtbaan begon, zat mijn hart in mijn keel.
Her heart was in her mouth as she waited for the exam results.
Haar hart zat in haar keel terwijl ze wachtte op de examenresultaten.