Pass up or Hand In

What is the definition of pass up and hand in?

Actually both have the same meaning which is giving our homework to the respective teacher for the teacher to mark/check.
BUT
Pass up has another meaning. Want to know what's that? If your answer is 'no', i still will say it =P.
The other meaning is, FART a.k.a. the action of expelling bromine gas.xD

Funny examples:
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1. A: Have you "passed up" everything to the teacher?
B: Yup, just now i "passed up".

(Good, so honest)

2. A: Everyone, please "pass up" now or else you all will get scolded.
Everyone: OK!

(OMG, faster run for your life!!!)

3. A: Can i "pass up" tomorrow?

(Wah, geng. Can set the time)

4. A: Who didn't "pass up" yesterday? Stand up now!

(Waseh, didn't pass up only mah)

5. A: Can you "pass up" tomorrow?
B: I think i can. I will try my best to "pass up" tomorrow.

(Usaha yang berterusan penuh dengan semangat...)

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To LOL, please substitute "pass up" with FART. HAHAHAHA...
My conclusion is, always say hand in. ^^