Swine

Honestly, this song seems to be about an uncomfortable sexual experience – most likely rape. Given Gaga’s speech at the iTunes Festival AND her interview on the Ellen Show a few days after, that seems to be the most likely subject being addressed in the lyrics.

(It’s interesting to note that the song “Monster” from The Fame Monster also seems to be about rape, and The Prelude Pathetique segment at the beginning of the Marry The Night music video is often thought by fans to be about rape, unwanted pregnancy, and an abortion).

"Heard you, don’t speak, don’t wanna hear another" Probably “I know you want it” talk.

"I know, I know, I know I know you want me You’re just a pig inside a human body Squealer, squealer, you’re so disgusting" Gaga is remembering the disgusting man who violated her and compares him to a pig.

"Baby, I should have a little more just to stay out of my mind" She has to drink to forget about it.

"Slap it, skinny. Would love to watch your ass go wiggle" (these are the actual lyrics) She wants revenge on her rapist.

If you have any doubt of the validity of this interpretation, look up on YouTube the short speech she did before performing this song at the iTunes Festival, and also her interview on Ellen at the end of 2013 (it's the interview where she's wearing a pink dress).

Based on what Lady Gaga said at the iTunes Festival, that this song required her to go back to a painful time in her life, I think she's referring to her time involved with drugs and how during this time she would "have a little more..." to win the approval of her then-detrimental friend group "'cause it's when I'm not thinkin' with you that I act like a swine".

I can't help but think of the game Amnesia: A Machine For Pigs every time I hear this song. "You're just a pig inside a human body." Couldn't be the source of the song of course but wow is it a fun coincidence.

This song is about rape, and was inspired by Lady Gaga's rape when she was 19, as revealed by her on the Howard Stern Show.