history: My social anxiety acted up and I failed at doing basic math in my head when paying the cashier and looked like an idiot!
current: My social anxiety kicked up the other day while paying for groceries and I failed at doing basic math in my hand due to my nerves. I ended up giving the wrong amount of money.
next: It's okay. People are very understanding. Did you underpay? I'm sure it happens all the time! 