Every time, without fail, they blink or do some other faux pas that makes them look like a complete dope.
As soon as there was a mention of whether or not he could pull it off, they had a telepathic discussion where they decided to use that as a catapult towards getting him to do it, and it ended up saving him from making a huge mistake as he leaned in to kiss Robin and she started laughing at his newly dyed hair.
Question 3 What unexplained fruit did Ted find in his apartment after a drunken night out? Because he uses the exact same percentage number for every single one statistic that he decides to fabricate out of thin air.