Kingsman fans have a reason to celebrate as a potential crossover between Argylle and Kingsman might not be too far off. Movie goers who stayed behind will enjoy a Marvel-esque scene bonus. When the credits roll, it’s interrupted by a flashback 20 years ago. Shown in the mid-credits is a young Aubrey Argylle entering what looks like a bar from the Kingsman movie. Just after the Kingsman reveal, the customer orders a “cosmopolitan with a…