in episode 4, what's up with ALL of the female crew blushing and having nosebleeds when the گٹار is pulled out of naota's head?

in the FLCL world, each person has a spirit instrument within them. Also, in this world, they are phallic symbols. And when آپ know your models and makes of instruments (it's quite funny). Naota's گٹار is an original 1958 Gibson Flying V (a true original is very very hard to find) which gets the ladies, ahem, "excited"

Because, the گٹار resembles how big he is(genitals).