Happy Birthday Greeting Cards featuring Funny Free Printable Birthday Card: Oops! Sperm Eraser Fail! Downloadable Gift. and more

Send a laugh with this funny free printable birthday card. A tripping sperm makes for a hilarious, print-at-home birthday surprise!

Celebrate with a laugh using this hilarious free printable birthday card! Simply print at home for an instant dose of birthday cheer.

Wish them a happy birthday with a blast of bizarre humor using this free printable card! Print at home for an unforgettable greeting.

Wish them a happy birthday with a giggle thanks to this free printable card. A sperm cell celebrating on an avocado is a hilarious print-at-home treat!

Kick off the celebration with laughs from this funny free printable birthday card. A sperm cell juggling its kin is a hilarious print-at-home surprise!

This free printable birthday card is sure to get a laugh. Print at home for a humorous surprise.

Wish them a happy birthday with a splash of fun using this free printable card! Our sperm character rides a wave, ready for print-at-home celebration.

Celebrate new beginnings with a laugh using this free printable card! Our happy sperm character is ready to party, perfect for print-at-home.

Get this hilarious free printable birthday card. Perfect for a laugh and easy to print at home.

Give a birthday laugh with this hilariously tangled free printable card! Our sperm character is in a bit of a pickle, ready to print-at-home.

Celebrate a birthday with this free printable card of a cheerfully fist-pumping character. Print at home for an energetic and funny greeting.

Send a swift and happy birthday wish with this free printable card. Print at home for a bright and funny greeting from a zippy character.

Wish them a happy birthday with this free printable and funny card featuring a spinning character! Print at home for a unique touch.

Send smiles with this free printable birthday card featuring a joyfully bouncing character! Print at home for an instantly fun greeting.

Celebrate with this free printable birthday card featuring a happy, bouncing character! Print at home for a delightful and fun surprise.

Surprise them with laughter! This free printable birthday card features a character bursting with excitement, ready for you to print at home.

Wish them a bright birthday with this free printable bouncing character card! Print at home for a hopeful and cheerful greeting.

Wish them a fast and fun birthday with this free printable zippy character card! Print at home for an energetic greeting.

Celebrate wins with this free printable birthday card! Easy to print at home, it’s a hilariously unique way to send wishes.

Celebrate life's little leaps! This free printable birthday card features a tiny sperm playing hopscotch on abstract shapes, perfect for printing at home.