After being raised with three older brothers, I have two that they used all the time.
I'm sick and I can't possibly go out with you. Then a fake cough over the phone. That same night, they go out with a different girl who will put out.
Here's my favorite one that they used when I was a child.
Sure, we'll take our little sister out to go trick-or-treating. We love spending time with her.
They would use me to get girls' phone numbers. However, I did get even with them for that one.