Talking rubbish sih buh sah nah

I did promise that I would investigate more about sih buh sah nah. I wanted to establish if is is nah or nab and A'Tiu 阿濤｜阿涛 has usedthis word in this video and he pronounced it as nah.

In addition, I have listed the various words related to sih buh sah nah and nab below. I hope you are able to see the logic of why I have arranged these characters to this expression.

This sih buh sah nah is vernacular Teochew and thus this expression is not found in any of my Teochew dictionaries.

This is an expression which is used to scold people and it is best not to be used in polite companies. 

sih8 buh4 sah8 nah4 蝕𠜙煠垃｜蚀𠜙煠垃	to talk rubbish	hu2shuo1ba1dao4 胡說八道｜胡说八道
sih8ghuêh8 蝕月｜蚀月	lunar eclipse	yue4shi2 月蝕｜月蚀
sih8bung2 蝕本｜蚀本	loss: to make a loss [in a business transaction]	pei2ben3 賠本｜赔本 kui1ben3 虧本｜亏本
sih8 蝕 means to eat up; bung2 本 is a capital in a business and sih’bung 蝕本 means to eat up the capital in a business which means making a loss
buh4 𠜙	to poke	chuo1 戳
sah8m6sêg8 煠唔熟	crazy	feng1 瘋｜疯
sah8nab4 煠靹	an idiot, a fool, a nincompoop	sha3gua1 傻瓜
sah8pan3 煠奅	an idiot, a fool, a nincompoop	sha3gua1 傻瓜
nah4sab4 垃圾	dirty, filthy, not clean	zang1 髒｜脏
nab4 䪏｜𩏼	tender, soft to describe the texture of meat	rou2ruan3 柔軟｜柔软 rou2nen4 柔嫩