When you fake a laugh when really inside you are so nervous. Common in introverts. This also happens when you are meeting someone new or in a new relationship. Normally you report this though to you best friend.
Girl: hey, you're cute wanna go out with me some time.
Guy: *nervous laughter* yeah, text me when and where
Guy: *nervous laughter* yeah, text me when and where
by Milaina March 3, 2020