Most of these are based on the melody of some song you've probably heard before. Some melodies I think I made up, but if you recognize them from somewhere else, please let me know what the tune is!
Chicka Chicka Boom Boom The first ten words are from the popular children's book of the same name, the rest is me going off on a tangent (original tune)
Mr. Keen To the tune of "I Have a Little Turtle" or some similar song...I think a dozen different children's tunes have this melody.
Diaper Cha Cha (original tune, as far as I know)
If You're Crappy To the tune of "If You're Happy and You Know it."
Baby Sucks the Breast To the tune of "Lady Sings the Blues."
I'm Just Suckin' On My Mommy To the tune of "I'm just workin' on the railroad."
Hush Little Baby To the tune of "Hush Little Baby." This is the kind of insanity that comes to a parent after hours of walking a baby to stop her crying.
Rockabye To the tune of "Rockabye Baby." Insert your own child's name in place of 'Ravenna.'
Burrito To the tune of "On Top of Old Smokey."
On Top of Spaghetti (vegetarian version) To the tune of "On Top of Old Smokey."
On Top of Old Daddy To the tune of "On Top of Old Smokey."
Baby Sings the Blues To the tune of "Lady Sings the Blues."
Here Comes A... To the tune of "Here Comes a Bear" by the Wiggles. This is one of those songs you can just keep coming up with silly verses to add for whatever situation you encounter.
I Have a Little Daughter To the tune of "I Have a Little Turtle" or some similar song...I think a dozen different children's tunes have this melody.
Take The Baby Out (original tune)