You would still get the effects of the heroin, but it will likely take more to get the same effects. The oral route is not the most efficient way to take it.
You Die
you die
pain
you die...
Nothing happens
Everybody has a good time
you die
You can get chemical burns along your throat and stomach if you swallow lye.
nothing happens, just hug the person......
You burp bubbles
The most common ways are to snort, swallow, smoke, inject into a vein, or inject into a muscle.
It depends on how much you swallow. If it is a large amount, you could get diarrhea and/or vomit.