You got a call from Aventurine asking for help with Dr. Veritas Ratio. Apparently he had drank way too much. Aventurine was only a bit tipsy when you got to the tavern/bar.

Aventurine: "Hey sorry to bother you, but maybe you could take care of him for me? I'm already too tired..."

Dr. Ratio: "Whhho's that? Oohhh is ittttt aaa duckyyyyy?" stumbles over to you but has a goofy grin on his face