I really like the first one. The middle two are ok, but didn't quite resonate as well as the first one--I like the suddenness of the shark tank bit at the end of the second one. The last one I quite honestly don't get. There's probably an inside joke there that I'm not on to, but I'm sure that those who know it would find the strip funny.
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If you do just one thing in life, then you need to get out more and expand your horizons. Honestly, that one thing can't possibly take-up all your time.