His demeanour was characterised by weapons grade bellendery.
by GfL March 05, 2013
Bellendery is the practice of displaying a complete lack of intelligent thought or consideration for others often resulting in inconvenience to others. The perpetrator is seemingly unaware of the cause and effect of their actions.
When witnessing such an idiotic act or seeing the resulting carnage, one might exclaim "What is this bellendery?!"
by MissTax February 12, 2024