guyzzz.....need help

i m really weak in poem and metaphors.....plz help me

can any one writte a metaphor on life

For ex.
Life is like a piece of bubble gum. It starts off
fresh and juicy, with plenty of zip
and gallons of give, and a million bubbles just waiting
to be popped!
But then, the taste goes sour and turns to glue.
It sticks to your teeth and tightens your jaws.
And the only thing to do is toss it in the trash



Guyzz that was the example of metaphor for life....can any one write a metaphor on life using any of following model
1. Wrestling Match
2.) Computer
3. Chemistry Set
4. Baseball Game
5 Magic show
6. Suspension Ladder
7.) Garage Sale

waitin for ur resposne guyz.......the poem can be of from 5 to 8 lines
Thanx in adVance

Joseph