Reactor

money.cnn.com

I saw an old boyfriend on line today and I added him.  He told me off and deleted me. 

I WANTED TO DO THAT.  Now I am feeling angry and hurt.  He has ruined my day.

NUCLEAR REACTOR:  AN APPARATUS OR STRUCTURE IN WHICH FISSILE MATERIAL CAN BE MADE TO UNDERGO A CONTROLLED, SELF-SUSTAINING NUCLEAR REACTION with the consequent release of energy. ~~ The Oxford College Dictionary