Worst one was a threesome. ie, a guy and his girlfriend + child and another guy who was long time buddies with both of them and a couple dogs.

The day after I moved in, one of my buddies moved into the MIL Suite downstairs and is still there to this day (April 2020).

Screening tips: it really depends on what you are looking for: party buddies?

He became a devout born-again, ditched all his gambling buddies and started spending all his time in church.

They put in a new electrical box because the tenant wanted to plug in a ridiculous amount of things at the same time in the kitchen and kept tripping the breaker, to the tune of hundreds of dollars for a job that involved waiting for their buddy electrician to put in the "emergency" breaker.  

My buddy and his wife who are retired multimillionaire’s got $2,400.

If the lender is in Rochester,  and you and the property are in Cali, nah, I wouldn't do it.I have a buddy who spent $3,000 all said and done, on getting a $0 loan from someone in New York who promised the money, which never arrived.

I learned the hard way that if you act like a buddy to your tenants, they will then start asking favors they'd never normally ask for.  

Get a dog and go after it buddy!!

If you would like some help I am here for you buddy as you know one person time.