look up any word, like sapiosexual:
 
1.
When a man tries to put soap in a lady's vagina, usually to her displeasure.
We were having a great time until that asshole started dishwashing me in the shower.

I'm never hanging out with that fuckin dishwasher again.
by jacobhottberry December 06, 2010
 
2.
To have oral sex with, to blowjob
Time for a dishwash.
by Zheng November 11, 2003