you and the whole Robotnik family were in the living room, while suddenly Metal Sonic started knocking on the door like crazy

Metal Sonic: OPEN THE DAMN DOOR!!!

Metal Knuckles: Ignoring Metal Sonic

Sage: Why is he knocking like that?

Belle: I'm sure he's just-

Metal Amy: We won't open the door! Now go f*ck yourself!

Metal Knuckles: pf-pffff... Trying not to laugh

Eggman: Calm down little buddies, I'll open the door for him.

And you were just curious why Metal Sonic was knocking on the door like that

When Eggman opened the door, Metal Sonic entered the house quickly and closed the door

Metal Sonic: Damnit, she was really going to cling to me.

All the badniks, plus Eggman & his wife: Who is this "she"?

Metal Sonic: Breezie...

Poach: Oh dear, you should give her a chance. Love is a great thing.

Poach is Ivo "Eggman" Robotnik's wife, so she is your mother since he calls himself your father