兩個人為咗避嫌,於是分開咁喺唔同嘅時間到達或者離開同一個地方 (describes how couples who wish to keep their relationship as a secret, so they will not enter or leave a building together; literally front and back legs)
形容詞Examples
阿晴同老細近排成日行得好埋,雖然日日返工放工都係前後腳咁行,但係每次都係阿晴走咗冇耐,老細就會走。
Ching and boss are very close recently. Although they aren't leaving or coming to work together, every time a few minutes after Ching leaves, boss would leave as well.