It's very cold that is fantastic to watch TV dramas at home. * It's very cold that is fantastic to watch TV dramas at home. Is this correct? Or Dose it need to put a comma "," in the sentence? like "It's very cold, that is fantastic to watch TV dramas at home" And this sentence sounds natural?

Which, Where A place WHICH people use to do something is a facility. Can I use "WHERE" instead of "WHICH" in this phrase? If it's not possible, why is that?

accepted me as one of their own * I can't get out of bed now, my blankets have finally accepted me as one of their own. I guess, 'I got accepted as one member of them(blankets)' By the way, I'm wondering why "their own" as a possessive case is used in this sentence? (If my question sentence is wrong grammatically, would you correct it? Plz. Thanks in advance)

b!#ch I'm reading some comics, there's this sentence "If a blind B!#CH like you could find it, I'd be very impressed." What dose B!#CH stands for? Is there any specific meaning?

'so to speak' and 'that is to say' are the same meaning? 'so to speak' and 'that is to say' are the same meaning? Or sometimes could be the same meaning?

Should I use sound or sounds in this sentence? In this sentence, My intonation and accent sounds awkward. Should I use the plural form of sound or the singular form of sounds?

What's the meaning of big dummy? You left your iPad on it you big dummy. What's the meaning of you big dummy?

Would you help me to interprete 'Coaldigger'? * coaldigger :the opposite of golddigger; a woman or man who deliberately selects partners whose attractiveness lies in the fact that they are a financial liability I made an interpretation fot that, a person who selects partners whose have a financial responsibility. financial liability means 'financial ability'? They are the same meaning? And in the next e.g sentence, Kingi's such a coaldigger that even though gets no child support, she doesn't even want her new loser boyfriend to get a job. I made an interperetation the sentence. Kingi has a child but gets no child support from government, (is this correct?) even though she doesn't want her unemployed boyfriend to get a job. Then, the e.g sentence is so strange, that doesn't make sense, why Kingi is a coaldigger? coaldigger dosen't matter a partner's financial ability?

For what and What for is the same meaning? "For what", and "What for" Are they same meaning? (Is that same meaning? ) : Which sentence should I use, the plural sentence or the singular sentence?