“a language where nobody knows how to conjugate the verbs.”
minä nauran - ich lache - I laugh
sinä naurat - Du lachst - you laugh
me nauramme - wir lachen - we laugh
te nauratte - ihr lacht - you laugh
he nauravat - sie lachen - they laugh
hän nauraa - sie lacht - she laughs(!)
To speakers of other languages than English, this is a weird way of insulting an English dialect.