My friends think this summary is woefully inadequate and have provided me with the following addition:
As much as it pains us to admit this, he does have a number of good qualities including: loyalty, sweet abs, above-average charisma, inexplicable success (presumably luck), a decent sense of mischief, and a valid driver's license. Basically, he's a highly-skilled, tightly-packed ball of energy that is licensed to operate a motor vehicle.
However, it is incumbent upon us to warn you about a few of Justin's fatal flaws. First, he's fiercely competitive and annoyingly good at lawn games. Second, we're not sure if he fully recovered from the scorpion sting (see below). Also, he's fairly opinionated, stubborn and apparently completely incapable of writing a full OkCupid self-summary.