Place it at the end of a rambling clip, right where the story should have stopped, then follow it with the Funny Ha Ha Laugh Sound to let the audience react, and close with the Ba Dum Tss Drum Sting for a clean finish to the joke.
About this sound
This is a short spoken clip of one impatient voice asking, “My God, are you still talking?” in a sharp, cutting tone, with no buildup before the line lands. It feels instantly dismissive and a little rude, like hearing the thought everyone in the room already had. That bluntness makes a long-winded moment feel funny instead of just tedious.