I have to go do something
A lie you tell to get out of a situation you don’t want to be in. It’s like saying you have to poop, but you’re actually just lazy.
'I have to go do something.' He left me in the middle of a dinner like I was a side dish he didn’t like.
'I have to go do something.' She vanished during our second drink like I was a bad cocktail.
'I have to go do something.' He ghosted me during the middle of a movie like I was a boring sequel.