How to Be a Tough Guy
Being a tough guy is perceived as being strong, fearless, and sometimes egotistical and macho.
Steps
Work out. Nothing says tough like massive arms. Get in the gym, hit the bench press and squats, and hit them hard. Don't tell anyone you've been working out either, come summertime the girls will be surprised at the pool.
Make sure you wear clothes to reflect your toughness. Once you're in shape, don't be afraid to wear something a little tighter.
Do scary things. Scary things include twirling knives at the dinner table, being able to tell the exact dimensions of cartridges (Starters : 5.56x45mm NATO, 9x19mm Parabellum, 7.62x51mm NATO, 7.62x39mm Soviet, 12.7x99mm BMG, etc).
Don't talk much. Don't ask for help. Never let anyone see you upset. Don't talk about trivial things, mostly stick to what needs to be said.
Be mysterious. Allude to past events that caused you to be the way you are. Under no circumstances make anything up.
Nothing hurts. Pain is imaginary.
Be gruff, get that stubble look.
Be unpredictable. If you are unpredictable, people will not know what to expect from you, and this will discourage other "wannabe" tough-guys.
Earn the respect of other people. Why be a tough-guy if nobody respects you? Earn respect by helping people with hard tasks that nobody else will take, but make sure you aren't a 'push-over' or 'slave-boy', or enforce your respect (Depending on what side you are - good or bad). The choice is up to you!
Tips
Don't laugh. Ignore jokes.
Stand up straight. This will make you look self-confident.
Build on confidence greatly.
Consider joining Army or something similar.
Learn to fight. Being a tough-guy means you must always be prepared to take on the haters.
Learn peoples' weak spots. Everybody has a weak-point that can be exploited. Even you! Try to hide yours and exploit other peoples'.
Go take a Japanese style of Jujitsu where you learn Karate at the same time.
Nothing says you're the real thing like exuding strength, confidence and kindness.
Jump over the fence all the time like Michael Klem.
Warnings
If you want to walk and talk tough - go ahead, but be careful not to overdo it. That will make you look like a wannabe and nobody respects a wannabe.
Be gentle on the inside, yet strong on the outside. Make sure if a girl is hurt, you help out. You don't have to be a jerk to be tough.
Don't be a bully. Bullying is a sign of your own psychological weakness.
Being tough could result in being single. Unless you don't need a girlfriend, don't be afraid to do so.
Play sports and get into fitness. Build up and you will be a tough macho in no time!