"how did this bug get through your testing?"
"i never encountered it."
"but all you have to do is click the button. it's not dependent on anything else."
"but it's only in firefox"
"so?"
"i never tested in firefox"
"why the hell didn't you test in firefox?"
"i didn't know we had to."
"why wouldn't you have to?"
"i thought we only use chrome. no one ever talks about firefox."
"*we* use chrome. our customers use whatever they want."
"well, i didn't know."