How do you atone for forgetting a good friend's birthday?

A simple, heartfelt apology and a a make-up gift and/or nice lunch out. If your coworker is a true friend, he will accept your apology.

And by the way, considering how much it has upset you to have forgotten his birthday, you don’t suck as a friend—and he’ll know that.

Apologise, give them a hug and bring in the cake with candles and all their other colleagues. These things happen. I know you will make up for it.

Thank you guys.

I’m sure you’re right, he’s already forgiven, but I still feel like I let him down, especially knowing what a hard year this has been for him.

I want to show something other than a late cake. This truly is someone I’m close to. I can’t even describe how awful I feel about letting him go through an entire day at work with nobody knowing.

blowjob.

Personally, I can forget almost anything. I think a good friend would understand forgetfulness, it doesn’t mean you don’t care, it just means you are forgetful! Apologize and ask if you can celebrate a little bit late. Take him out to dinner or whatever you would have done on the day and all should be fine.

Good to see you back!

Show him, and tell him, that you really care. Take him out to lunch. Make a big deal with co-workers. He will get over it.

Get off your knees!

You don’t “atone” for missing a friend’s birthday. You simply apologize – and don’t blame your stressful life, or your thousands of other responsibilities, or your boss or your dog – you just say, “I’m sorry I missed your birthday. You don’t look a day older than you did yesterday!” and then think of a nice way to celebrate it to show him that you really do care.

A steak and a blow job usually works. NOW get back on your knees!

Edit: Hell. I see that @rojo beat me here with one word.