What is Do Something?
1.
A phrased used on someone who is already upset or angry, in an attempt to look tough because the other party won't resort to violence.
"Yeah, I stole your last Twinkie, do something!"
See
2.
verb. to defecate, pass excrement (usually used of babies/children)
As a child I was given an enema if I didn't do something for 4 days
See
