うらアカ
anonymous account (on social media; used alongside one's main account); secret account
Also written 裏アカ
Noun
裏うらアカに見みせかけて、親おやを安心あんしんさせるとは、巧妙こうみょうな手口てぐちね。
Posing on a fake account is a clever trick to put your parents' minds at ease.