How do people order food or drinks in your neck of the woods?

In Chicago over the last few days I've noticed many people at counters or to waiters when ordering will say

"I'll do the [item]"

As "I'll do the pizza" or "I'll do a grande decaffe americano with room" (overheard at starbucks)

How do people order in your neck of the woods? Any interesting variations?

(I've also heard "we're gonna need [items]" in the Mid-Altantic")