I'm pretty much convinced that my dad isn't my biological dad. We look nothing alike, have nothing in common, completely different personalities and body types. Everyone I know agrees with me. My mother lies so she wouldn't tell me who the real father is if she knew. I wanna get a dna test but I'm afraid of asking my dad. Can I just go to his house when he is out and get some hairs off his bed? Or would he need to go in person to take the test?