Still lost in translation: What IS a surface-to-air missile?

This actually happened and I posted it on Facebook:

Shoulder fatigue, not army fatigues

Doctor: Have you done mobilisation exercises?
Me (puzzled): Long, long time ago, leh. 
Doctor (after a pause): Uncle, I mean to help you with your frozen shoulder problem.
Me: Oh.
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CC sent me this:

Hit or miss: Truth in advertising

The 1982 Israeli invasion of Lebanon resulted in many dogfights between Syrian and Israeli jet fighters.

In the end, the Syrians lost over 80 warplanes and had a number of surface-to-air (SAM) missile batteries knocked out, while the Israelis lost no planes.

Some time later, the Syrian Defence Minister was shopping for weapons in Moscow.

His host, the Soviet Defence Minister, was embarrassed about the scorecard from Lebanon.

He told his Syrian guest, "Take anything you want -- our best tanks, rifles, surface-to-air missiles..."

"No, no, you don't understand!" the exasperated Syrian replied. "Last time you gave us surface-to-air missiles. This time we need surface-to-jet missiles!"

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Found online:

Anyone has a dog to spare? I need to get on the escalator

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From ST:

Hello, get reel, not real!

So, they are just an acting couple, not a real couple?

Wah, this 89-year-old actually skydived at a community club!
(now that's a record)