To masturbate for ten different reasons
Inquisitive man: Why are you masturbating?
Wanker: Because I'm stressed out, I just saw a picture of Jessica Alba, I have an errection, there's an erotic song playing, I'm feeling horny, I haven't had a wank in three days, I haven't got much else to do, no one else is in the house excpet you (why are you still here by the way?!), and I would like to relax and feel wanking is the best option for this
Inquisitive man: So you want to wank for NINE different reasons?
Wanker: Oh and I lost my keys so I want a wank
(Interuption)Conclusive man: You're having a tenfold bash!!
Wanker: Am I? I thought a tenfold bash was wanking ten times in one day?
Conclusive man: No, no. That's defintion one of the same term, the secondary definiton is to wank for ten different reasons, as in Wanker's case today.
Masturbating and successfully ejaculating on ten separate occasions in the space of 24 hours
Boy1: Alright boy2, do you wan come out to the cinema today?
Boy2: Can’t mate, I’m on a tenfold bash. I wouldn’t have the time!
Boy1: Come on mate, you can nipp off to the toilets every now and again
Boy2: Nah mate, SERIOULSY a tenfold bash is hard work