Butt, Buttocks
You have nine flags. With these nine flags you take them one by one and put them up your butt.
Imagine taking these nine flags... count 'em... and putting them up your butt. With each one that's up there it gets harder and harder to fit the next one in.
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しり
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Now that you have nine flags inside your butt, you have to get them out. But, you don't know how to. So you ask Siri (しり), "how do I get nine flags out of my butt?"
In your head, doing the Siri voice, come up with an answer for your nine flags in the butt predicament.