Refers to physical contact between two individuals involving stimulation of the genital organs of at least one while the moon is out.
Sexual union between humans involving genital contact other than vaginal penetration by the penis does not apply to the term Moonfa.
Moonfa not to be confused with Moonfuk does not mean that this person will take you up to the moon while the stimulation is occurring, in fact quite the opposite Moonfah's (plural) have a hard time achieving an erection and often suffer from erectile dysfunction.
Damn it those Moonfah's are at it again!
"Moonfa, that was to fast!" "You didn't take me up to the moon, i tought you were a Moonfuk!"