User blog comment:ERBofSmoshery/Calvin and Hobbes vs Ash and Pikachu - Epic Rap Battles of History: Season 2 Episode 3/@comment-25263388-20151017002958/@comment-6632076-20151017035147

According to that Meowth episode he learned English just by watching an English speaking class

So probably every Pokemon could do the same thing since Meowth was nothing special

Just saying