Or the version of the same joke when after the testing a guest walks in and asks where the restrooms are (iirc) and the bar blows up :)

Found it: https://www.reddit.com/r/Jokes/comments/vfy8hj/a_software_tester_walks_into_a_bar/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

But might be too long and probably works better when read than delivered…