According to Merriam Webster a braggart means a loud arrogant boaster.
Earlier today I encountered a braggart and I was sooo annoyed! The girl was boasting about her huuuuge house and about her travels. Blah blah blah! She’s a friend of my friend and honestly I really wanna smack her face from all her braggings! Aaargh! And the torture part is I really want to leave but I can’t because I’m being polite. Hay, sometimes people surely test your patience! 
I'm a teacher but sometimes patience is not my virtue. I'm moody but caring, sensitive but thoughtful and generous to a fault.