1. "What is the meaning of the red flower lapel pins"

Poppy's - worn to commemorate those who died in the first world war.

Sold to raise money to help war veterans and worn on poppy day.

2. Not "whip up" but "whip around"

"To Whip up" would be "to incite" as in "whip up a storm/frenzy" etc though someones gran might be known to "whip up a meal" at short notice.

3. In the UK Indians, Pakistanis and Bangladeshis are commonly referred to as Asians though they might be better described as south asians as opposed to other general Asian groups such as indochinese or orientals.

These terms refer to geographical generalities.

4 - sorry no idea :-)