The birthday girls grinned as their friends surprised them with a homemade cake.

When the lights came on, the birthday suiter stood awkwardly in the middle of the room, embarrassed to be the only unclothed person at the party.

At the beach party, several friends dared to sunbathe in their birthday suits.

She happy birthdays everyone she meets with a handmade card.

Yesterday I happy birthdayed my grandmother over the phone.

They spent the afternoon happy birthdaying all their friends on social media.

We started celebrating half birthdays for our twins because their actual birthdays fall during the holidays.

We decided to celebrate his half birthday with a small cake and balloons.

We celebrated the twins' half-birthdays with small cakes and balloons.

They kept several birthday cakes in the fridge until the guests arrived.