Pay off mum and dad's mortage, cars etc. Same applies for nanny ans granda!
For myself a Lamborghini and a bad ass Gaming set up

Buy and my gf a house put away alot and help out relatives mostly

Buy my mum a house and buy her what ever she wanted, Then spend alot on my girlfriend and brother.

Then what ever i have left just use for myself or keep it in my bank.

I would pay off my school debt and my parent's debt in whatever. Would help out friends and family in need along with others who aren't family and also in need. Then I would get my parents to retire and invest my money so we never have to work for a living again. Would also gift a ton of people gold whom are worthy haha

I would hire a financial lawyer to make sure there not taxing the money inappropriately and then i would retire.

Pay off mine and my best friend's college, buy a house, buy my mom a house, buy me and my friend a nice car, then put the rest in the bank and invest in CD for my child.

Buy what I need too and save the rest. I could be a millionaire but I would still go to work and live a normal life.

I'd quit paid work and just do charity work like feeding skinny Ethiopians or helping in natural disasters.

100 Million?
I'd start by paying off everything my intimidate family owns, then donate about 30 Million to various charities. Next I'd invest in some companies, Buy about 100 acres of land and build me and my wife our dream house, and setup a sick shooting range and hire some people to put a man made lake in my backyard and fill it various fish, Buy my wife her dream car (Lexus RX 350) and buy myself a 2017 Ram Rebel, and of course, my dream car (2003 Terminator Cobra).
Last things are a couple small things, one beastly powerhouse gaming & recording pc, a ton of fishing and hunting gear, and lastly, walk around Atlanta, GA and give homeless people some money to help them. Then just throw the rest in the bank, and have a good life.

I'd just put 90% in savings and pay off all my bills and shit, Then i'll spend a few on my girl and some gaming equipment, Then just relax. and proceed life as normal.