Justin Bieber better learn to love whiskey and potatoes ... cause he's Irish!!!
The Biebs ecstatically revealed Saturday he's around 60% Irish ... prompting him to give Ireland a shout out on his Instagram Story. This was in response to his pops, Jeremy, posting on IG showing him holding a bottle of Conor McGregor's Proper Twelve Irish whiskey.
Conor - Attention - Twitter - Deartháir
Naturally, all of this got Conor's attention who jumped on Twitter and embraced his fellow deartháir -- don't look it...