Interestingly some years ago a Tongan born rugby player caused much to do after exposing how he would stick a finger up other player's anuses to put them off their game. The following quote is taken from Hopoates Wikipedia page:
"On 17 November 2018, Hopoate played for Manly in the Legends of League charity event. He was allowed to participate because the event was not sanctioned by the NSWRL. Hopoate courted controversy as he wore a rubber glove on one hand during a match against Newcastle, referencing his 12 week suspension in 2001 for sticking his finger into the anus of opposition players. The media branded the prank "grubby" and "repulsive"." End quote [en.m.wikipedia.org]