This is your singing telegram  
I hope it finds you well  
You’re invited to a party  
‘Cause we think you’re really swell
 
Gummy’s turning one year old  
So help us celebrate  
The cake will be delicious  
The festivities first-rate
 
There will be games and dancing  
Bob for apples, cut a rug  
And when the party’s over  
We’ll gather ‘round for a group hug
 
No need to bring a gift  
Being there will be enough  
Birthdays mean having fun with friends  
Not getting lots of stuff
 
It won’t be the same without you  
So we hope that you say yes  
So, please, oh please R.S.V.P.  
And come, and be our guest!

Whoever tagged this with “explicit” must see things that aren’t there or downright comically prude.
 
Also, I’m not entirely sure whether it’s supposed to be anthro or human, but it seems to be more the latter.