Main Entry: con·fes·sion
Pronunciation: k&n-'fe-sh&n
Function: noun
1 a : an act of confessing; especially : a disclosure of one's sins in the sacrament of reconciliation b : a session for the confessing of sins
2 : a statement of what is confessed : as a : a written or oral acknowledgment of guilt by a party accused of an offense b : a formal statement of religious beliefs : CREED
3 : an organized religious body having a common creed

in general, all the dictionaries, encyclopedia, bishops agree on teh definition of confession and in religion they go a bit further to:

Praised be Jesus Christ, who in the power of his resurrection, filled the Apostles with his Spirit and gave them authority to forgive sins.
" ‘Peace be with you. As the Father has sent me, even so I send you.’ When he had said this he breathed on them and said, ‘Receive the Holy Spirit. Whose sins you shall forgive, they are forgiven them. Whose sins you shall retain, they are retained.’ "

(http://www.ewtn.com/library/BISHOPS/PENANCE.HTM)

"In the Sacrament of Penance the faithful, confessing their sins to a legitimate minister, being sorry for them and at the same time proposing to reform, obtain from God forgiveness of sins committed after baptism through the absolution imparted by the same minister; and they likewise are reconciled with the Church which they have wounded by sinning."

well good news everyone, go fuck the world and then confess to your fuck up. no need to be a so called man or let say no need for being responsible for your deed, at the end of the day you'll be forgiven. ask holy (or better to say hole-ly) mr. gibson.