That would be cool but no one would go to your house. Its like someone walk into your house, your lion pounces and takes down your house guest, your running around shouting "DOWN boy, down!! Bad boy!" lol XD
Lions are not pets. Some places you can have a lion that you can care for, but you need to get a license and pass inspections. BTW a lion can eat 10-15 lbs of meat /day. So if you buy your beef in bulk, which is the only way to go in this situation you are looking at $2.50-$2.77/ lb . So even if you have a small female and feed the 10 lbs/ day it is $25/day or $750 / month or $9000 a year. Then there are the vet bills and any supplements you may need. So do you have $12 thousand a year you can spare? This of course doesn't include the price of the license, or the construction of the cage/ fencing/ den.