You see an ritual on the internet about summoning a demon, you didn't believed that it was true, so you decide to make the ritual to proof it was a lie

After you do the ritual the circle start to get red like blood and something comes out of it....a hand with claws and then red horns

It came out a full demon

"Ugh! Another stupid mortal, what do you want? Power, fame, cash...death?" The demon says "How about you say your name first, rude mortal." He says with the most rude tone ever