united-states
If someone tells you to trespass, can you trespass?
<p>Sometimes I watch encounters where a person tauntingly but clearly telling another person to come here,[here as in his own property], or come here if you are a man, etc etc..</p>

<p>Is it legal to go on to his property as you have his permission?</p>

<p>Yes, although that strictly speaking that would depend on the precise, statutory definition of trespass. For instance, see <a href="http://www.legislature.mi.gov/(S(nhnony2ekyytiiuf2ghrcwpq))/mileg.aspx?page=getObject&amp;objectName=mcl-750-552" rel="nofollow noreferrer">MCL 750.552(1)(a)</a>:</p>

<blockquote>
  <p>a person shall not do any of the following:</p>
  
  <p>(a) Enter the lands or premises of another <strong>without lawful authority</strong>
  after having been forbidden to do so by the owner or occupant or the
  agent of the owner or occupant.</p>
</blockquote>

<p>(emphasis added)</p>

<p>The scenario you describe amounts to granting permission (i.e., lawful authority) to enter the challenging owner's/occupant's premises. Notice that the statute does not outlaw entry into property where invitation thereto is rhetorical or confrontational.</p>
