..|..

it is a emoticon meaning "middle finger". The periods represent knuckles and the | obviously represents a finger ...

Written in the context of a discussion on irc

<Charles> I think you're a goof
<BigMan>Yeah, well ..|..

40👍 14👎

..|..

Basically this is an alternate to the middle finger emoji.
The "." represent the bent fingers and "|" represents the straight finger.

Bro : You are so dead when I tell mom
You : ..|..