Hat tip on this to Hilton Yam of 10-8 Performance. I'd have never seen it otherwise.
Warning: language.
This tee-shirt conveys a splendid a message. Buy yours here: http://www.rule13.co.uk/shop/mens-once-upon-a-time/
If you're unfamiliar where this came from, it originated with the Australian comedian Ronnie Johns and his skits based on Mark "Chopper" Reed(see also Mark Reed) like this one (WARNING...Seriously, a lot of language.)
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Remember you can also get a MilSpec Monkey morale patch with the same message: http://milspecmonkey.com/store/patches/harden-up