Aithníonn ciaróg ciaróg eile.

ah-n’iːən k’iər-oːg k’iər-oːg el’-ə

A beetle recognizes another beetle.

Note: This seanfhocal can be used dismissively (as in “It takes one to know one”), or as a sign of comraderie (as in “Birds of a feather flock together”).