What are they teaching them there? … Halifax, Nova Scotia. Photograph: marvellover/SignSpotting.com

Ah, in that case I’ll rob somewhere else … Eskilstuna, Sweden. Photograph: Kristian Sidén/SignSpotting.com

The kind of thing that causes smoke to escape from ears … Abu Dhabi, UAE. Photograph: Annie Vorderburg/SignSpotting.com

Don’t touch this sign. Don’t even read it … Beijing, China. Photograph: Sonny Kristiansen/SignSpotting.com

What many parents have no doubt thought from time to time … Westbrook, Connecticut. Photograph: Larry Witanowski/SignSpotting.com

Shhhh … Essex, England. Photograph: Phil Crane/SignSpotting.com

Can’t this bird read? … Johannesburg, South Africa. Photograph: Matthew Jones/SignSpotting.com

You know what they say: all roads lead to Patra, Greece. Photograph: John Jaeger/SignSpotting.com

Clear as mud outside San Antonio, Texas. Photograph: Lowell G McManus/SignSpotting.com

Two signs too many … Tuscaloosa, Alabama. Photograph: Tommy Ford/SignSpotting.com

You hear a lot about the dangers of drink driving, but what about drink walking? … Patong Beach, Thailand. Photograph: Kevin Wright/SignSpotting.com

I mean. What? … Fresno, California. Photograph: Steve Holtkamp/SignSpotting.com

On the plus side it must be hard to get lost, assuming you always want to go to the freeway … New Taipei City, Taiwan. Photograph: Jacob Hsia/SignSpotting.com

No re-entry, baby, we’re through … near the I-70 in Pennsylvania, USA. Photograph: Stephen Simpson/SignSpotting.com

Those poor children … Cairns, Australia. Photograph: Gail Wilkinson/SignSpotting.com