The dirty Dan is where a woman sucks your penis and toe fucks your arse at the same time
Also, once you cum, the cum is then used for face cream
"Man I had sick time last night"
"What were you up to gerald"
"My girl gave me a dirty Dan"
"Thats fucking grim mate"
'I'm furious john'
'Why alexander'
'Cause Phil left a schlob in the pub toilet and clogged it'
'What a legend!'