1.) when someone gives you a compliment and you have no idea how to react. when this happens close your eyes and laugh out loud to yourself enjoying the moment.
2.) when you tell a joke that no one else found to be funny, or no one else heard at all and you proceed to laugh to yourself.
3.) A smugness
Sebastian: "damn Randy that sure is a nice beard you got going there."
Randy (inner monolouge): "I never really thought it looked that good, but alright ill flatter myself...haha, hahah, hahahahaha!