Here are the secret codes, if anyone wants to try them 😄
In the title menu:
biggusdickus for the 'Swinger's Club' mode (everyone is naked)
bigdaddywheels for unlocking the "Big Chair Mode" option in the options menu
In the character selection menu:
robert (P1) and zloumoe (P2) for me as a character
cthulhu (P1) and fhtagn (P2) for Cthulhu as a character
valeria (P1) and priestess (P2) for Valeria the Pagan Priestess as a character
ninja (P1) and turtle (P2) for the 'Kung Fu Tortoise' 🥷🐢
In the chair selection screen:
takeadump for the 'Turbo Toilet' as a chair 🚽💨
Have fun!