Okay, this has probably been done before. But let's start a fresh one, shall we? What's your list of things you've come across which have made you think, "Damn, you know you're getting old when..."? My personal list... You know you're getting old when: 18 year olds look like little kids. These ****ers can legally operate road going machinary unaccompanied! You take the toilet system lid off to check if you remembered to put the tap on after getting out of the shower to see if it's worth bending down to reach the tap. Your legs ache after walking up the stairs. What's yours??