to use one's scrotum to hit another man's scrotum. often associated with 'jousting'
"Did you hear Bill? Last night Tom drank piss, so Andy Dandy Slapped him and then spat in his eye. What a mess"
by FM104 August 23, 2007
to use one's penis to slap another man's penis
'Tom was drank piss last night, so I dandy slapped him and then shat on his shoes'
by Tom's Sister August 21, 2007
when you get slapped by a long hard willy
i got a dandy slap as slick was horny
by Prodgod August 22, 2007