Hello. Would you tell me what "I suppose I better had." means in this context below?
"Thanks for your help tonight. I couldn't have done it without you."
"That's OK. You can buy me some Pokemon cards tomorrow."
"Yeah!" I laugh. "I suppose I better had."
I should make sure I do that.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.