I'm scared that i will go to hell.

Hello. i am a christian who struggles with fear and anxiety. i was scrolling through some videos on the internet. and stumbled across a video which said "if you laugh you get a first class ticket to hell" i did not realise until after the video that it said that, i laughed during said video and now i am terrifed that i will go to hell and be in eternal torment for something so simple. please help clear the air on my current situation.