The most crystal clear evidence of Hitler lying was his speech on the Sudetenland question in September 26, 1938, in which he claims the lands in question were Germany's very last territorial claim:
http://www.greatspeeches.net/2013/05/adolf-hitler-no-more-territorial-demands.html
http://comicism.tripod.com/380926.html
>This is the last territorial demand I have to make in Europe, but it is a demand on which I will not yield.
>if this problem is solved, there will be no further territorial problems in Europe for Germany.
Another questionable statement made in the same speech was:
>What happened then, you know. The infamous international world set at Germany. Germany had: not called upon one man. It never thought of solving this problem militarily.
The Wehrmacht very much did draft plans for a military invasion (Fall Grün) and there are plenty of reasons to believe Hitler was willing to set this plan in motion if no diplomatic solution was achieved.
His main statement of Germany's total absence of any territorial claims post-Munich was repeatedly proved a lie in the coming year.
The most obvious violation was, of course, Danzig. In 1938 Germany had no more territorial problems. In 1939 it somehow got a new one. In 1938 Germany had no more territorial demands. In 1939 it somehow had new ones to make. But Hitler didn't lie, no, he never lied at all. NEETsocs will likely respond that what was being asked was a plebiscite, that it had to be done urgently because of brutal ethnic opression of Volksdeutsche [insert pictures of a massacre that took place after the German invasion] and so on.
Another violation was in March 1939, when hyperpacifistic Germany with no expansionistic intentions whatsoever occupied the remainder of Bohemia and Moravia and made it into a puppet state. Though Hitler described the new protectorate as historic Lebensraum, this was not de jure an annexation and so NEETsocs have their excuse. The Czechs considered themselves the victims of naked imperialism but it's not like NEETsocs would care.
What's most damning is the obscure annexation of Memel, also in March 1939.
>Rumors had reached the Lithuanian government to the effect that Germany had specific plans to take over Klaipėda. On 12 March Foreign Minister Urbšys represented Lithuania at the coronation of Pope Pius XII in Rome. On his return to Lithuania he stopped in Berlin with the hope of clarifying the growing rumors.[7] On 20 March Ribbentrop agreed to meet with Urbšys, but not with Kazys Škirpa, who was asked to wait in another room. The conversation lasted for about 40 minutes.[9] Ribbentrop demanded the return of Klaipėda to Germany and threatened military action. Urbšys relayed the verbal ultimatum to the Lithuanian government. Because the ultimatum was never set down in writing and did not include a formal deadline, some historians have downplayed its import, describing it as a "set of demands" rather than as an ultimatum.[11] However, it was made clear that force would be used should Lithuania resist, and it was warned not to seek help from other nations. While a clear deadline was not given, Lithuania was told to make a speedy decision and that any clashes or German casualties would inevitably provoke a response from the German military.[9]
We know from Hitler's speech in September 1938 that Germany was fine with its borders and did not wish to demand a single more square km of land from any other European state. Hitler said it, so it was true. Yet it got this strip of land from Lithuania. What must we conclude? That the 40-minute conversation was just friendly chatter and Ribbentrop never asked for anything. Lithuania loved Germany so much Urbšys simply spontaneously offered Memel and Ribbentrop had no choice but to accept this generous offer. Later on Jews rewrote history to claim Ribbentrop made a territorial demand and backed it with force. Or perhaps Ribbentrop truly made a demand and thus Hitler lied about the absence of further demands.