How can people retweet on my twitter, has my account been hacked?

[AmShaegar]

I just logged on twitter (haven't done so in months) and found re tweets of a lot of a sick stuff, that I did not re tweet? How did someone get on to account and do this?
I have not logged on my account for a long time, but there are tweet and re tweets on the account that I did not do? WTF how did this happen I if I have not been on my account?
yes, I know I can re tweet. But I have not been on my account, so who has been re tweeting under my name from my account?

I feel the first 2 answers are from retards or people who do not understand the question
/facepalm
yes Ian I know what a re tweet is ffs, I want to know how people have been re tweeting things under my name from my account?