Difference of 'Suck it' and 'Suck it up'?

[Kricha]

I know that, as quoted from 'Conchita',

'Suck it up' has the sense of 'put up with someone/something'. In other words, it means to accept someone/something, even if they are unpleasant.

How about 'suck it'?

As in the dialogue from Prison Break Season 4 Episode 12 'Selfless'. When General Crantz thought that Scofield had only one card to insert in the total of six slots, in order to open the security system named 'Scylla', he said'

'Looks like you're a few cards short.'

Then Scofield took out, from his bag, the five reaming copies of Scylla cards and put all of them into the slots.

Sucre, one of Scofield's men, then said,

'Suck it General'

What's the exact meaning of 'suck it'? Is it the same as 'suck it up'??

Please tell the difference of them.

[Prezbucky]

Suck It

1. An insult. Synonymous with "Get bent!", "F*** you!", etc.

2. An amorous command. The "it" is usually not a subject fit for kids or polite company.

3. An innocent request. In this case, the "it" may be a bottle, a lollipop, or venom (first aid for a snakebite often calls for the venom to be sucked out of the bite).

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Suck It Up

This is a command meant to inspire, to motivate.

- Persevere
- Stick with it
- Work harder
- Keep working hard

Our football coach used this one a lot, especially at the end of a game or practice. The context of its usage is usually when you're tired and/or things are difficult -- "suck it up" is used to keep people motivated to get the job done, to not give up, to keep fighting/playing hard despite being tired or suffering from other unpleasant circumstances.
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Billie Jean is not my lover. Hee.

[PronouncePro]

great response there.

[Kricha]

Many thanks Prezbucky,

Now I know the difference between them.