He wrote: "The 360 million dollar 'sailing yacht A' pulls up out the back garden this morning. 'Sailing yacht A' its called.
"That's how you know the owner doesn't need to [care] about anything.
"Sailing yacht A. Most expensive sailing yacht in the world. 360mill. Owned by a Russian billionaire. Google it. Crazy!"
The mixed martial arts fighter rented a luxury villa in Ibiza last week for a friend's wedding and has been enjoying his time away from training by partying on the Spanish island.
McGregor has relaxed his fitness regime while he's been away by indulging in whisky and steak dinners.
The reported NZ$182 million he earned from fighting Mayweather last month means McGregor is in no rush to return to work, and his trainer John Kavanagh has already indicated that there is unlikely to be another fight before 2018.
After trying his hand at boxing, the 29-year-old is expected to now return to the Octagon, where a trilogy with Nate Diaz could be on the cards.
Amid reports of a fight with Diaz, McGregor dropped a hint that he could be ready to return from his break to come up against the American once again.
He wrote on Instagram: "Quick scope of it before I depart like a pirate towards it."
The popular Notorious One has not fought in the UFC since dismantling Eddie Alvarez to become their first-ever two-weight world champion.
His next move remains unclear and McGregor insists there are several doors open to him, but it appears the 29-year-old could soon return from his break to weigh up his options ahead of his anticipated return to a combat sport.
