It’s not a Jamaican accent why should they understand it
We talking about two different things i think
The only thing we do is stress/enunciate the first syllables of words when we talk. Thats literally the accent. Sometimes the pitch goes high for the last syllable too… Its hardly even an accent
The accent is pronouncing Toronto - Turonno…or about like aboot.
Slang wise we have always used a lot of jamaican slang and we have our own random shyt like cheese/lowe. Its all in good fun…not that serious.