what’s rart?
To me, from the context, it looks like the happening of something unpleasant, perhaps, unexpectedly.
I googled it and found a rather primitive definition in the Urban Dictionary for the term ‘rart’.[YSaerTTEW443543]
TOEIC short conversations: Two conference participants introduce themselves to each other[YSaerTTEW443543]
This word ‘rart’ seems to me an attempt to suggest a sort of ‘country type’ accent in English such as you might find in the south west of England. To me
means a right old (really) good laugh.