Reference made to positioning one's self around an unsavory or seedy character that may eventually lead to harm.
If my Daddy knew that I hung out with Ralph he would have surely told me, "Son, if you continue to lay on the floor with dogs, you're gonna get fleas. It's just a matter of time!"
A reference made to positioning yourself around an unsavory character or seedy person will certainly lead you down a harmful and descructive path.
If my Daddy knew how much I hung out with ole' Ralph, he'd have certainly said, "Son, if you continue to lay on the floor with dogs, you're gonna get fleas and ticks!"