First voice:
It's your birthday, we make you feel right,
get that groove on, we'll party all night
it's your birthday, you didn't tell us,
but I still got together all the fellows

Second voice:
you're getting old,
is that a bald spot?
Even though your grown
I think you're still hot

Third voice:
It is, your birthday today,
we're gonna party till the dark night goes away
it's your birthday today

Fourth voice:

so you're a year older,
the world seems colder,
where your belly used to be there's now a giant boulder

you're complaining bout your back,
soon you'll have a heart attack,
and you cry yourself to sleep cause you have a hanging rack

a walking malfunction,
filled with deep compunction,
and you've had your first encounter with erectile dysfunction

now your dreaming bout your birthday,
back when it was great,
you werent stuck in this low payment job that you hate,

now with every year that passes,
you need even thicker glasses,
and an extra cup of coffee just to get you off your ass,

it's a struggle most days,
just to kill that morning haze,
and you caught yourself thinking: "Aaa kids these days"

but here's the thing mate,
yeah, you still look great,
those things are in your head, there is no extra weight

so put on a party hat,
we got a cake and all that,
and lets drink ourselves blind and sing all night