Rammus was more than happy to see that Gragas had some special delivery for him.
"Mhm!" He said, before doing a 360°-in-midair catch, landing right in front of the Rabble Rouser.
He nodded at the mention of tankiness and opened his own bottle, extending it to toast.
He then started drinking - maybe to the dismay of everyone who'd get taunted later on, but Gragas was definitely not one of them (except if the summoner commanding Rammus ordered him to - no hard feelings on that case). His eyes widened every time he drank some of the 'elixir' but he was soon done drinking. He threw the empty bottle behind, towards an open window. Yes, he was not aware that you could recycle such things.
The only sound he could mutter to voice how good he was feeling at the moment was: "Yeah!". Definitely sounded more enthusiastic than usual.