How can you tell if your friend is a leprechaun?

well i dunno cause i think my friend might be because i keep seeing one following him around???? if anyone knows y please hit me up

Well its easy you did you do to a doctor i used to see all these things but my friend told me i need help (im only 12) but i still see them arggghg the reason why is your a nutter btw i live in Ireland i see them all the time in my nans garden