“Shoot yourself in the foot” means “to do or say something that causes problems for you”. Example: When Michelle got drunk before her final exam, she shot herself in the foot. She failed the test! Learning English can be fun!
"Suck it up" means "stop complaining". Example: The teacher told her students to suck it up after they told her the test was too difficult. Example Sentences: A: I hate my job! I hate my boyfriend! I hate my life! B: Suck it up!
“Luddite” means a person who is not good with technology. Example: I don’t use Facebook because it’s too confusing for me. I’m a bit of a luddite. Get our apps for learning English: http://learzing.com