https://www.urbandictionary.com/define.php?term=celebrity+hall+pass&defid=12094113
Permission given by your significant other to go on a date/sleep with a particular celebrity.
Girl: When I met Zac Efron and he asked me out, I was so glad he was my celebrity hall pass!Girl 2: No way, your husband said it was okay?! Girl: Yeah, he said if I ever got the chance, I could sleep with him!