Re: Sirius, Remus (AND NOW JAMES!)
Sirius rolled his eyes in response to Remus' probing look as he moved to help get James pulled down into the seat beside him. He wanted him there in case James decided to launch off and go do something unplanned down the train somewhere.
They had a plan. It was best to stick to it. Sirius was still enough of a pureblood to care a bit about his pranking reputation at the very least.
"Good Merlin, James," Sirius said with a more exaggerated eye roll. "Don't tell me you're this giddy from the butterbeer. Did you have another? Honestly mate, you're a light weight. 's not even alcohol."
Again, Sirius shot Remus a look, this one incredibly sheepish.
He might have spiked the butterbeer with firewhiskey when James had been distracted. Accidentally, of course. Yep. No way had his hand tipped the drink purposefully.
It was supposed to be him drinking it. James had just... happened to get to it first.