a thing in the bag
You use this when you want a total idiot to buy you drinks because you're too lazy to do it yourself. It’s also what you aim for if you wanna be a totally cool guy.
I used the thing in the bag to get my friend to buy me a slushy. He's still mad.
That thing in the bag is the reason I’m a cool guy.
You don't get cool until you master the thing in the bag.