What've you been up to?

What does this phrase mean?
​Easy...check out the graphic below, and watch THIS video clip.
After you've  done that, go and practice using it when you meet your friends!
​Now, tell me in the comments below, What've you been up to?
Remember..."Use it or Lose it".
​Listen to, Watch, Read, Speak and Learn "A little bit of English...EVERY DAY!"