Hi Gigabyte14,
We are placed in different places and scenarios all the time.
Like what Kenplus says, sometimes you have to adapt to the
environment instead of the environment to you.
Its like grouping in poly, where you can't really choose your group
mates. Later on there's NS, and it can be really bad if you don't
adapt.
If you don't like to discuss/talk about stuff like that, you could
always listen and smile, or start another topic. Or alternatively,
just sit in a corner and wait til they start other topics before
joining in.
This will happen a lot of times in your life, so it depends on how
much you want to make friends, or how much you want to be
alone.
If all else fails, just sit on your seat and play yr psp, listen to
your mp3 player or play with your HP. Time will just fly by before
you know it~
Cheers,
Aaron