look up any word, like timebomb:
 
1.
1. To fuck someone really hard

2. To devour a meal so fast it leaves a mess, or no food is to be seen

3. To win a fight verbal or physical
1. I wiped out my big cock and demolished that tight ass

2. I was so stoned that I totally demolished that burrito

3. I went to jail, but I definetly demolished that dude!
by ImaBrat January 31, 2010
 
2.
Means very drunk usually or it can mean a person is highly affected by narcotics. Generally the implication is so intoxicated that they lose control of their motor abilities, essentially either passing out or sitting in a still stupor.
I'm going to get demolished on Friday night at a keg party.
by james trent February 06, 2007
 
3.
1. A person who is inebriated.

2. The act of defeating one's opponent (typically in video games).
1. "That guy is so DEMOLISHED!"

2. "Toby DEMOLISHED Bowzer when he played Super Mario Brothers last night.
by HeatherFeather_RD January 09, 2008