Giant thing I don't know what it's called

I have a hard time describing this dream because I don't what this object is..but well it's a kids toy..and it's filled with water and theres like a tunnel going through it..I got a picture so no worries, but I had a dream there was a giant pink on of these an they kept throwing me through it..It was pretty cool, It doesn't sound like it but it was a really fun dream...anyways