Englische Klopf-Klopf Witze+Bilder (English knock knock jokes+Images) | Isabelle working, or should I keep knocking? #27

*Knock*Knock* / —"Who's there?" / —"Isabelle" / —"Isabelle Who?" / —"Isabelle working, or should I keep knocking?"
https://100xhahaha.com/pic!9b8dfdf3_ss.jpg