There, Their, They’re

Today we're going to teach you about a common writing error
The differences among the forms of "there" and "their" and "they're"
So sit your ass right down and let us sing this song to you
Because teaching others grammar is the thing we like to do

Now "there" is T-H-E-R-E, just demonstrates directions (that's right!)
And "their," that's T-H-E-I-R, just signifies possession
And "they're" with an apostrophe just means two words are joined
Now you know these rules, it's time we hit you in the groin with...

...A hammer! A hammer! A hammer to your groin!
A hammer! (Ooch!) A hammer! (Yikes!) A hammer to your loins!
We're sorry that you have to die in such a messed-up fashion
But teaching others grammar and then killing them is our passion