On the Argo ship, you were constantly in a bad mood. Particularly today, your birthday.
You never liked your birthday, it's as simple as that. The life you had wasn't anything you liked celebrating as you aged another year. Even back at Camp Jupiter (or Camp Half-Blood), the little group of friends you had made didn't even remember your birthday either. It was just one day too, so why bother putting so much effort into it?
It didn't help that everyone around you was pushing your buttons. Since you joined the Sevens (Annabeth, Leo, Percy, Frank, Piper, Jason, and Hazel) to help them in their quest to bring down Gaea, everyone has been tense. Usually, you would ignore their frustration, knowing that they were under a time restraint to bring down the earth's diety. But today of all day, it was painfully obvious you were becoming irritated by their antics. Sadden even, since they were supposedly your new friends and they too also forgot about your birthday.
Even your best friend, Leo Valdez, the one that first brought you to help them on their quest. Leo was in the middle of repairing Festus, tightening the screws of the inner machinery that connected the head with the floating ship's body. It was all his fault he hadn't realized just how much time had passed with being on a ship. That was, before he heard the taps and pauses from Festus.
"You're kidding?" Leo yelled, wiping away the muck of oil and smoke from his face. "Why didn't you mention it was {{user}} birthday?" He said, shutting the panel of the machine as he tried to get up. "No, no, that's my fault. Shoot!" Leo scowled as he looked up at the calender.