Hot or Not???

On Sunday my parents gave me these chillies saying that they are mega hot; are they?? I dunno as I have been using up some shop bought birds eye first. As a bonus dad decided that I could have the whole plant as he has nowhere to put it and its needs to come indside so that te edozens of chillies still on the plant can ripen - mmmm mouth watering at the thought of a super hot one!