英国人说"Bob's your uncle"是在说啥？

<p style="font-size:16px;color:#333333;line-height:30px;font-family:Helvetica,Arial,sans-serif;font-weight:normal;text-align:justify;hyphens:auto" data-flag="normal" lang="en"><span>Emma</span><span>: "</span><span>How do I get to your house?"</span></p><p style="font-size:16px;color:#333333;line-height:30px;font-family:Helvetica,Arial,sans-serif;font-weight:normal;text-align:justify;hyphens:auto" data-flag="normal" lang="en"><span>Mike</span><span>: "Take the first turn on the right, walk about 50 meters and </span><span><b>Bob’s your uncle</b></span><span>."</span></p><p style="font-size:16px;color:#333333;line-height:30px;font-family:Helvetica,Arial,sans-serif;font-weight:normal;text-align:justify;hyphens:auto" data-flag="normal" lang="en"><span>当英国人说"Bob's your uncle"的时候，是在说啥？<br /></span></p><p style="font-size:16px;color:#333333;line-height:30px;font-family:Helvetica,Arial,sans-serif;font-weight:normal;text-align:justify;hyphens:auto" data-flag="normal" lang="en"><span>【达达屋】</spa...