(pos:名詞)(label:粗俗)
yue:經儀式（#上契）確立名義關係，並冇血緣嘅#細佬；但係「契弟」通常用嚟表達第二個釋義，為咗避忌一般人會講#契細佬
eng:a younger boy or man treated as a nominal younger brother; this usage is very uncommon and often replaced by the euphemism #契細佬 kai3 sai3 lou2, as the offensive usage (below) is often presumed when one mentions "契弟"
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<explanation>
yue:以前指男同性戀者，後來引申為社會地位低下嘅男人；而家已經變成一個冇乜特別意思，純粹鬧人用嘅字眼；專指男性（量詞：個/條）
eng:originally referred to gay males, and subsequently extended to mean a person with low social standing; in contemporary use, it is a generic vulgar term to refer to men; a jerk; a dick
<eg>
yue:你唔好恰我，咪當我契弟！ (nei5 m4 hou2 hap1 ngo5, mai5 dong3 ngo5 kai3 dai6!)
eng:Stop it. Don't you dare look down on me.
<eg>
yue:你條契弟今次仆街喇，我唔溶咗你唔得！ (nei5 tiu4 kai3 dai6 gam1 ci3 puk1 gaai1 laa3, ngo5 m4 jung4 zo2 nei5 m4 dak1!)
eng:You are done this time jerk. I am going to put an end to your life.