maybe I'm rude, maybe it's a city thing but I'm in a city

maybe I'm some rude city boy but when I make eye contact with you and make a showing motion with a small bottle of orange juice in my hand and then place it on the sales counter as I reach into my pocket for cash as you continue to talk to your co-worker, I kind of expect you to know that I would like to purchase the small bottle of orange juice and I may be a little perplexed when you stop your conversation and ask me "Can I help you?"

"Yeah, I would like to buy this"