second skin 

Describes the act of donning a virtual or simulation of the human form in a real or online space.

In the safety and comfort of their own homes, they simply sit back in a “stim chair” where they can control their surrogates as if they were their second skin.

second skin by Pure West October 3, 2009

second skin 

Something you call your best mate defining brotherhood.

Dude, lay off ,he's my second skin, you mess with him you mess with me.

second skin by Cilver Lynx May 18, 2018