You hadn't even walked that far from the restaurant behind you when you turned around and asked her if she wanted some ice cream.
"Wait, now you want to buy me some dessert?! I already ate so much sushi at that restaurant, my belly is spilling over my waistband! You just want to fatten up your mama don't you?"
You just smile and silently turn around again and walk away.
"Hey, I didn't hear you say no! ... W-wait up!"