The Klein Bottle is one of the three 4D objects. It can be obtained in three ways:
How to obtain:[]
1: You will need more than 400+ strength. Go to The Club on the Third Island and find a stick figure named Broski . He will challenge you to an arm wrestling contest, and when you win, he will give you a Klein Bottle.
2: Find The Dimensional Drifter and buy the Klein Bottle from him from him for $100,000.
3: Go to Wally-Mart , buy either a bottle of Painkillers or a Self Help Book. In the evening, go to the First Island south of New Lines Inc. and find Suicidal Goth Dude . Give him either the Self Help Book (for Positive Karma) or the Painkillers (for Negative Karma) and he will give you a Squeegee . Go to the Third Island behind the 11/7, and the Squeegee Kid will be there. Give him the Squeegee and he will give you the Klein Bottle.