black black on white direction law no alternative one way one way signs only sign signs specific street signs white black-on-white communicating communication directional humor humorous humour indication lane laneway name nomenclature street-name street-sign unusual appearance concrete convenience door gender-specific ladies narrow painted public public-conveniences rocks surface surfaces texture textured textures thick thin toilet wall walls wc women wood wooden arrows blue divergent diverging no-alternative pointer pointing splitting splitting-up traffic traffic-flow traffic-sign turn turning two-way gray grey left-turn reflective vehicles vehicular wording arrow one-way one-way-signs accessory anniversary appreciation balloons birthday brown celebrate celebrating celebration celebratory circular colors colours decorated decorations decorative fiftieth fifty floating foliage fun garden gas-filled gold golden happiness happy height helium-filled high inflated leaves light plants preparation prepare prepared round shade shaded shadows shrubbery shrubs special thankfulness addition Australian Australian-passport citizen citizenship conditional conditions documentation documented identification identity international invalid legal limitations limited no-entitlements not-authorised not-authorized not-endorsed not-valid official overseas-travel passport past past-use-by-date personal-details restriction specific-North-Vietnam-restriction stamped travel travel-document warning building conveniences gender hers his ladies and gents loos public conveniences public toilet structure WCs beach