ehehe
A nervous, embarrassed giggle. The sound of laughing awkwardly when caught doing something or receiving unexpected praise.
💡Being caught eating cake before dinner — 'She laughed ehehe with frosting on her face.'
えへへ、ごめんねとはにかんだ。
She giggled ehehe and said 'sorry' bashfully.
Caught red-handed, he just laughed ___ and scratched his head.
見つかって○○と笑ってごまかした。