1. Can you get me a a coke?
2. Can you bring me a coke?
3. Can you fetch me a coke?
4. Can you buy me a coke?
(What does #1 mean, #2, 3 or 4?)
#1 means the same as #2 and #3. #s 1 and 2 are used the most.
#4 involves a purchase; the others could involve a purchase or just bring the Coke from a table or something.
Remember to capitalize the C on Coke -- it's a brand name.