why did they picked the name "sucker punch"

They think that sucker punch is a good title of a movie but when i saw that movie it was not a good movie to me when i saw it i went to see it with friends of mine there wasn't a lot of people at the southtown theater i can't believe that i went to go see it they thought it was a good title for a movie but i disagree i am not seeing a movie like that again that is as lame as the title of "Indiana Jones kingdom of the cristal skull" and can't believe i wanted to see that movie i thought if saw that movie with my friend jenni i thought i would like it but i was deeply wrong when i saw it was lame like i said i am not seeing any of those kind of movies like those again i will not.