Sorry, just wasn't that good.

Graphics need great improvement. Even though you DID have backgrounds, they were very simplistic. Also, the characters seemed to all be very roughly drawn. You can use the optimize settings to reduce that.
The audio was a little annoying. Maybe don't make your characters Alvin and the Chipmunks style. That works for Foamie, but that's pretty much it. The audio seemed very awkward at times, too. Certain things seemed out of place, like the "Oh no, she got me" which followed him/her NOT trying to escape. Also, the music and lack of music combined to make it very boring.
The story completely lacked. There was nothing interesting at all. The only part that actually got a reaction out of me was the end, where he got smacked for NO REASON. You can definitely tell that this piece was made by a girl, and that's not meant in a good way. Most Newgrounds viewers are not interested in painting a slugs face with makeup. All the ideas seemed half-baked, you may want to think harder before you go into animating something next time.
I know you're probably new at animation, so read some tutorials, think really hard, and try again. If you aren't new to animation, you REALLY need to watch/read tutorials.
Sorry for the bad review, but you really need to improve a lot of things.