Paulsyd, that sounds like the one from
CrewTag.com. They have a ton of airline-themed shirts (not advertising, just informing

) I really want to get the one that says "Shift Happens", as I'm forever telling people their bags are too heavy!
One for pilots, more than FA's, but "Pilots do it with flare"
"FA's do it a 'mile high'" (yeah lame I know, but hey...)
or "FA's do it at Mach.XX" (insert figure here depending on how fast or slow-ass your a/c is