Sadly they thought ahead and blocked it for registration. Who is output below.

whois fuck.ai Domain Name: fuck.ai Registry Domain ID: 9a6ce4c7c7404941afe494053b8f51d3-DONUTS Registrar WHOIS Server: whois.identitydigital.services Registrar URL: https://identity.digital/ Updated Date: 2018-01-22T14:49:02Z Creation Date: 2017-12-16T03:25:00Z Registry Expiry Date: 2026-12-09T03:25:00Z Registrar: Registry Operator acts as Registrar (9998) Registry Registrant ID: 8626dd24374d46778a27685b2448f011-DONUTS Registrant Name: blockeddomains@gov.ai Registrant Organization: blockeddomains@gov.ai