mud-wrestling
/ˈmʌdˌrɛslɪŋ/ /ˈmʌdˌrɛs(ə)lɪŋ/originally US
noun
A spectacle or sport in which contestants, usually female, wrestle in an arena filled with wet mud. Also (in extended use): an instance or act of fierce or strenuous contention.
Origin
1930s; earliest use found in The San Antonio Express-News. From mud + wrestling.