The Chuckle Brothers are in Half-Life mod Black Mesa
UK comedy heroes Paul and Barry Chuckle are in Half-Life mod Black Mesa.
The duo can be see on a mug in a security office. You might have to squint a little bit but it's definitely their cheeky northern faces.
If you want to witness the hilarity for yourselves, you should download the mod here.
We'll leave you to make your own gags in the comments section below. No slacking.
Source: Reddit