1.Having a faux hawk.2.Getting Happy Meals at McDonald's.
3.Wearing jerseys in public.
4.Chatting on AIM.
5.Driving chicks to the airport.
6.Drinking Jägermeister.
7.Playing flip cup/beer pong/king's cup.
8.Dating college girls.
9.Dating cougars.
and last but not least...
10.Wearing clothes from Old Navy and Anchor Blue.
After all, "I'm too old for this shit!" Thank you, HIMYM.