this happened 2 years ago.
in a usual CNY gathering & visiting (in a large n noisy crowd)
a boy (aged 10) greet his unmarried aunty - XIN NIAN KUAI LE, WAN
SHI RU YI.
in order to get better $ in hong bao, he added on - ZHAO SHEN GUI
ZI.
all sudden, the noisy crowd stared @the boy n the aunty...
to break the ice...aunty give him the ang bao and say...kuai le =
soon will hv GUI ZI.