haha it really ever happened to my friend, he get 1
BTC in a single day of gambling.
he did very often make a parlay with high odds and at that time I think he's really a lucky day. where he made a parlay bet with the odds @1000 and bet 0.001
BTC, then he won the 1
BTC. he himself did not expect and quite regret that only bet 0.001

Wow!
Your friend must have been so lucky that he won 1
BTC with just a bet of 0.001
BTC.
I have always seen people losing all their money with a bet of all their bankroll even setting the odds to 0.02 or 0.01%, but never heard of something like that, winning with odds 1000.
That's really huge.