Their heads would pop like Bodolza at the end of DYRL, without a VF-1 firing at them.
I believe De culcha means incredible or unbelievable
In the fight between Max and Milia, she says something similar to "dak" when she dodges Max fire and has an expression of, that was close. Then when Max dodges her fire she says "de culcha" with an expression of surprise, not disgust, then Max hits her with fire from his gunpod and she gets upset and says "de bran" or something similar and finally when Max hits her with fire from his head guns she say "de bran de culcha" and she was then really pissed.