12 03 16
‘Kilroy was here’
I was getting sick of of being accused of not looking the jobs over and one day as I came through the manhole of a tank i had just surveyed, I angrily marked with yellow crayon on the tank top, where the tester could see it, ‘Kilroy was here.’
http://mentalfloss.com/article/51249/whats-origin-kilroy-was-here