What famous saying does this rebus mean?

COME SERVED <---
COME SERVED
COME SERVED
COME SERVED
COME SERVED

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I can write cow in 13 letters.

Can You?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What word does this rebus represent?

meta meta
meta meta

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

What's the only room from which no one can enter or leave

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

What word is represented by this rebus?