8/18/2016 6:54 AM PDT BY TMZ STAFF
Bam Margera spent a night in a Finnish drunk tank after getting into an argument with his wife.
Helsinki cops tell TMZ … they detained the “Jackass” star on Sunday night outside the Sea Horse — a landmark restaurant in that city. Witnesses say things were getting heated between Bam and his wife, Nicole … when cops arrived and hauled off Bam at 11 PM.
We’re told he was not booked for any crime, and they just let him sleep it off until 6 AM Monday.
Bam and Nicole have a rocky past with booze. As we reported, she got busted for DUI earlier this year, and wrecked their Porsche.