Question: how to make really stretchy slime with borax?
Answer: In one bowl, mix 1/2 cup of glue with 1/2 cup of water. ... 
Add food coloring to the glue and water mixture. ... 
In the other bowl, mix 1 teaspoon of borax with 1 cup of lukewarm water.
Stir until the borax is dissolved. ... 
Stir, stir, stir, until you don't feel the crunch of the solid bits of borax on the bottom.