Heart attack scares.

Call your Grandma before you go to her house to pick something up. Yelling out that you are present won't help, and she'll come out grabbing her heart because she was so scared she almost had a heart attack.

Don't forget that when all your siblings are married (except one who couldn't show up) and you have a family dinner, you will probably get left out. But hey, at least you get the choice to sit at the 2-4 yr old table or the elderly table.

When shopping for stockings on Christmas Eve every store will be sold out. You'll have to get Santa hats instead.

When you get home from Christmas break before the rest of your roommates, don't forget about that one that is from Belarus and never went home. You'll awkwardly walk in on her in a bath robe.