get sb in the sack
i know the word sack has many meanings and in the American Slang ,it can mean bed ,and having sex with sb.i have come across a sentence "how did you get that girl in the sack?" i think it should mean "fire the girl" but the translation group gives me the scripts should mean "lure the girl to have sex"i don't know ?should "get sb in the sack "mean "lose ones job? get sb fired"?canyou help me ?many thanks

Question

get sb in the sack 
i know the word sack has many meanings and in the American Slang ,it can mean bed ,and having sex with sb.i have come across a sentence "how did you get that girl in the sack?" i think it should mean "fire the girl" but the translation group gives me the scripts should mean "lure the girl to have sex"i don't know ?should "get sb in the sack "mean "lose ones job? get sb fired"?canyou help me ?many thanks

Answer

'To get somebody in the sack' means getting someone to have sex with you.

'To give somebody the sack' or 'to sack someone' means firing someone.

Answer

get a girl in the sack = take her to bed

get someone the sack = to get someone fired

#1 Hmm, I must get that hot woman in(to) the sack
#2 Your stupidity got me the sack = Because of your stupidity I got the sack

Answer

The main difference is "in".

When it has to do with losing one's job, the expression is always "the sack". Apparently this once meant putting your worktools away into a sack or bag, and leaving when you were retrenched.  Here's your sack. Go.

When it has to do with sex, it's "IN the sack". The "sack" is a figurative term for "bed" (also, "hit the sack" = go to bed to sleep).

Answer

'The sack' means dismissal from employment. It is an informal usage.

Get the sack means be discharged or fired.