Feeling weird with noise cancelling headphones is common due to the unfamiliar sensory experience they create. The sensation of being cut off from external sounds and the altered perception of surroundings can take time to adjust to. Some individuals may feel a slight pressure or closed-in sensation. However, these feelings usually diminish with continued use as your brain adapts. Taking breaks, gradually increasing usage, and adjusting noise cancellation intensity can help. If discomfort persists, consult a professional or try different headphone models that suit your preferences.