assistance at the nut house, please

I entered the grocery store last night and heard, "Assistance requested at the nut house, please.  Assistance requested at the nut house."

I started laughing, looking around for which friends of mine were pulling this off for my benefit when I realized I was indeed passing by the nut display counter and a large tall man was seriously gazing around looking for assistance.

How Did the Person Announce That with a Straight Voice?

and no one else even snickered ...