There are many countries this could apply to. For example, landlord, as in someone who rents out a property is considered gender neutral here in Ireland. The term landlady exists, but is only used for female publicans, and only rarely, as publican and vintner are both used more frequently in that context.

"Guys" is mostly male oriented, but wouldn't be unheard of for a mixed gender group, and similarly "Lads" here is often gender neutral despite it being the most male of working class male stereotypes in the country that is our nearest neighbour.