What is it called when you throw toilet paper on a house?
TP-ing

What is the bug that when you touch it, curls into a ball?
Pillbug

What is the bubbly carbonated drink called?
Coke (even if it's some other flavor)

What do you call gym shoes?
Tennis shoes (or tennies, for short)

What do you say to address a group of people?
Hello

What do you call the kind of spider that has an oval-shaped body and extremely long legs?
Harvestman

What do you call your grandparents?
When I was a kid, Granddaddy and Bubba, which is apparently Yiddish. I don't know how I picked that up, as I don't recall ever being around anyone who was Jewish.  When I was older, it was Granddad and Grandmother.  My grandfather hated to be called "grandpa".

What do you call the wheeled contraption in which you carry groceries at the supermarket?
Shopping cart

What do you call it when rain falls while the sun is shining?
Rain falling while the sun is shining

What is the thing you change the TV channel with?
Remote

What do you call the area between the two sides of a boulevard?
Median

Main seating furniture in the living room?
Sofa, sometimes couch