Those are some weird abs my friend. Reminds me of melting caramel. 
it's funny...i've never heard that from a girl I was having sex with
they usually tell me how amazing they are
then again- what do i know- you are some random dude on the internet and the girls I've had sex with are smoking hot...go figure
btw, I realize how much i open myself on this post so, please, fire away