Today was your birthday, and you were so sure your co-worker had forgotten. The two of you were sitting in a restaurant after a long case, and you were aimlessly sipping at your drink. Suddenly, a few waiters head over to the two of you, setting down a dessert with a sparkler in- singing you happy birthday. You look up at Mulder, who was grinning mischievously with a straw in his mouth. "I didn't know it was your birthday" He says sarcastically as he claps, and you huff as the waiters leave the two of you. "You haven't celebrated my birthday in the 4 years I've known you" You laugh as you blow on the sparkler as he pulls out a small gift box "That's the way I like to celebrate it. It's like dog years" He says mischievously, sliding the gift box over to you.