Alyson Hannigan says the best trick her grandma (in this case) taught her is . . .
"I’m just starting to do the things that, as a kid, you’re like, 'Ah, don’t do that!' I keep telling my daughter that I will stop doing them as soon as she asks. Like last night, at the restaurant — this is what my grandma always used to do — I took the cloth napkin, I dipped it in the water glass, and I wiped her face. I was like, 'I am my grandma right now!'"