Most definitions of it mention profit:
"DEFINITION of 'Flipping'
A type of real estate investment strategy in which an investor purchases properties with the goal of reselling them for a profit."
Flipping Definition | Investopedia
"Flipping is a term used primarily in the United States to describe purchasing a revenue-generating asset and quickly reselling (or "flipping") it for profit."
Flipping - Wikipedia, the free encyclopedia
While presumably a "flipper" may sometimes acquire a property and overestimate its value and end up not making a profit, the situation described by sports4eva115 clearly does not fall under this.
It is irrelevant since the IRS condition is that they intended to resell it, it is not a "no flipping" rule. He clearly was planning on reselling it (for $0 profit) from the beginning.
As far as the definition goes, he his doing this a favor for his brother.
He is profiting from any goodwill that creates.
If he didn't profit from the experience in some way, he should be willing to do this for anyone.