Here are some funny birthday quotes for friends that I found:

- "Time is a dressmaker specializing in alterations." – Faith Baldwin
- "Middle age is when you still believe you’ll feel better in the morning." – Bob Hope
- "They tell you that you’ll lose your mind when you grow older. What they don’t tell you is that you won’t miss it very much."
- "The more you enjoy and celebrate your life, the more is in life to celebrate."

I hope these quotes help! Let me know if there's anything else I can help with.