Is there a name for that stomach crease/wrinkle?

Is there a name for that stomach crease/wrinkle?

http://i.imgur.com/8H7PO.jpg

original: http://i.imgur.com/8H7PO.jpg

nsfw videos: randomsexiness

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A old pic of the wi[f]e before we met.

A old pic of the wi[f]e before we met.

gonewild

cupcakes (NSFW?)

cupcakes (NSFW?)

funny

(m)y first post.

(m)y first post.

gonewild

A recent photo shoot of (m)ine. Testing the GW waters.

A recent photo shoot of (m)ine. Testing the GW waters.

gonewild

A liiiittle lower [M]

A liiiittle lower [M]

gonewild

Mucho Mango

Mucho Mango

randomsexiness

Once you Pop you cant Stop

Once you Pop you cant Stop

randomsexiness

What does GW think [m]?

What does GW think [m]?

gonewild

Typical Saturday night on Bangbros.

Typical Saturday night on Bangbros.

pics

Love the [f]eel of this

Love the [f]eel of this

GoneWildPlus

Fluttershy has buffed up in the past year and a bit

Fluttershy has buffed up in the past year and a bit

mylittlepony

Doing a little x-posting

Doing a little x-posting

malesgonewild

Hello.

Hello.

EdmontonGoneWild

[m]ade a GB and actually took a picture whaaat

[m]ade a GB and actually took a picture whaaat

treesgonewild

[f]or you, Reddit

[f]or you, Reddit

gonewild