You can use these best friend birthday quotes as captions on Instagram, write them in a card, or send them as a text or DM to make your friend's day. It's all about showing just how much you care.

If you're running out of 'Happy Birthday, friend!' funny quotes for your number one, ... "I'm such a good friend, I forgot how old you are." 19. "Our self-esteem is supposed to peak at 60.

Here are 15 happy birthday quotes to send to your best friends on their big day — regardless if it is their 21st or 50th birthday! Advertisement. Cheers to another year around the Sun, ...