No Trespassing Without Permission

trespass - entry to another's property without right or permission (quote from thesaurus) "No Trespassing Without Permission" ... once you have permission, you are not trespassing... so, the sign tells you that you must'nt trespass without permission but the dictionary tells you that you can't trespass WITH permission. I think the sign has been written by someone with a sense of humour

it's redundant,but I find it funny.if you will trespass a property,it means you are allowed to pass through it.it will not be called trespassing anymore.it will be legal for someone to enter a property.the "no trespassing" will be suffice to the reader.I think the person who posted it is giving considerations for people who want to trespass.

I think it's not just you, it is called trespassing because you have no permission of passing through that area. If you are permitted to do so, then you're no longer 'trespassing' hehehe.. Unless what the owner meant was 'no passing'.

Certainly the part "Without Permission" is redundant or superfluous or both. It should read something like plain "No Trespassing" or "No Entry Withoug Permission". It is good for a laugh though. You should take a picture of it in case someone with decent language skills spots it and decide to take it down.

Well, trespassing is a negative movement. When you would be permitted into it would no longer be trespassing. Sometime we come to read like 'Transpassers would be executed'. What does it mean?