R2-D2 sucks! See attached diagram.
If you ever need of a quick reference for your R2 vacuum cleaner unit this t-shirt will be very handy.

Made of super soft pre-shrunk 100% ring spun cotton, this tee is an American Apparel 5 ounce tee. and features baby jersey knit comfort and side seamed for a custom contoured fit.  Design concept provided by Ibrahim Dilek.