What bad/weird habits or vices did you start up after you joined the Service?

I'm hoping some of you have funny ones:
Smoking? Cussing? Drinking? Bar room brawls?
Gambling? Snoozing the alarm too much?
Master of snark? Addiction to social media?

Mine was cussing, nothing special. The thing that makes it funny is that my mom controls her language around me, and I keep dropping f'bombs when I get worked up. My little brother falls into a stunned quiet when I do. The innocent one has been corrupted.