It's a drawing of Lolistomp's room-- or what I envision it to look like. Her bed is the balcony thing at the top-- there's probably a ladder or something leading up there. She also has a giant tank full of huge goldfish because why wouldn't she? She's a cat.
Also yes, that soda is indeed called HEY NAH! I dont know why, it just is. It's strawberry flavoured.