Crossword puzzle clue "because i so exasperated parent's answer to but why"

"Because I ___ so!" (exasperated parent's answer to "But why?")

"Why!? Why!? Why!?"

"Because ________!," Mom's exasperated reply

Kid's room, to an exasperated parent

Answer, when pointing to this answer, to the question "Which letters answer this clue?"

Entertainment options so named because the audience is more detached, per McLuhan (not because he thought they were awesome)

Default Twitter avatar (because birds because Twitter)

Parent's words after ''because''