Prime is a range of drinks being promoted by English rapper KSI and US Youtuber Logan Paul.
It went viral almost instantaneously. Videos with the #primehydration hashtag on TikTok have been viewed over 591m times.
It is widely available across the US and UK - but limited supply in Ireland means people are paying mad money to get their hands on a can.
Nicole Glennon, Lifestyle & Features Journalist with the Irish Examiner joined the lads to explain the hype before they gave it a try themselves...