history: I once was walking down the stairs (not paying attention) and ran into a glass wall right in front of everyone I accidentally ran into a glass wall once when I wasn't paying attention Oh man! That must of hurt even if it didn't break.
current: It did! Luckily it didn't break because that would have been even more embarassing (and costly)
next: It's crazy how glass is hard to notice when it's like perfectly clean.