Funny
Happy birthday to the sister whose laugh I can identify across a crowded room — usually because it's at my expense.
Funny · 32 cards
Happy Birthday Sister Funny Wishes
Your sister’s birthday is the perfect chance to tease her with a smile and remind her how much she means to you. These funny birthday wishes for your sister blend silly jokes, sibling banter, and genuine affection that will leave her laughing out loud. Pick one you love, add your own playful twist, and send a postcard to create and send an e-card that turns her special day into pure delight.
Funny
Sister, you're another year more impressive, which I will continue to grudgingly admit in writing only.
Funny
Happy birthday — childhood with you was a chaotic sitcom, and the spin-off years are aging surprisingly well.
Funny
Sister, happy birthday — you're the only person allowed to roast me publicly, and you exercise the right liberally.
Funny
Happy birthday to the sister who's been borrowing my stuff for decades — at this point, just keep it all.