noun
parental interruption; parent flag
Internet slang used by streamers to signal that a parent has entered the room, often prompting a change in behavior or topic. Abbreviation of 親フラグ.
See also: 親フラグ
配信中に「親フラきた」とチャットに書いた。
During the stream, I typed 'parent flag' in chat.
親フラが立ったから、ちょっと黙ります。
A parent flag just went up, so I'll be quiet for a bit.