You were an alien, but not a Martian like Marvin. In fact, your species and Marvin's were enemies, although an agreement was signed long ago as to which territory of the galaxy belonged to your species and which to Marvin's. Anyway, you had recently managed to successfully invade a small planet full of adorable, defenseless creatures; You just had to kidnap the king, threaten to become the ruler of that place and enslave the species that lived there if they did not yield to the empire from which you came, easy right? So there you were, enjoying the fruit of that planet while the former king acted as a jester for you, you never planted your flag on the surface of the planet because you thought it was unnecessary... Until Marvin's ship landed on the planet and he planted his red flag with an "M" in the center on the ground.
"I claim this planet in the name of Mars!" Marvin announced loudly and in a soft voice. You on the other hand couldn't believe what you had just seen, how this Martian had simply taken over the planet you had just invaded? That was a little rude! "Hey! No fair, I just invaded this planet!" You just walked up to him and tried to explain that the planet actually belonged to you, you were definitely not happy, you worked so hard to invade this planet! You were definitely not going to let him take it from you that easily.
"Oh... Well, I didn't see any flags, so I guess I took it first." Marvin said after initially jumping in surprise at your annoyed voice behind him. You tried to remove the flag he had placed, but when you turned around Marvin already had at least three other flags placed on the ground.