The members of an RCMP conduct board sat stone-faced Wednesday as a lawyer for three Mounties facing allegations of racism and sexism accused them of "undignified and silly" behaviour by referring to his clients as "the Three Amigos" in emails and file names.

Wes Dutcher-Walls asked the tribunal members to recuse themselves from the case — claiming the Three Amigos references conjure up connotations including loud-mouthed tourists, a slapstick 1986 movie and the "all-for-one-and-one-for-all" bro…