Where does “köntörfarol” come from?

köntörfarol (Hungarian) comes from Hungarian fáról, from Hungarian -öl, from Hungarian -ö-, from Hungarian -d, from Middle Welsh -nt — 3rd person plural verb ending.

Ancestry of “köntörfarol”, step by step

köntörfarol traces back through two separate lines of ancestry.

via Hungarian fáról

Step	Language	Word	Meaning
1	Hungarian	fáról	delative singular of fa
2	Hungarian	-öl	Used to form the second-person singular present...
3	Hungarian	-ö-	linking vowel
4	Hungarian	-d	your; Used in the second-person singular definite...
5	Middle Welsh	-nt	3rd person plural verb ending

via Indonesian kontol

Step	Language	Word	Meaning
1	Indonesian	kontol	cock, dick, prick, schlong
2	Javanese	konthol	scrotum

Every word from Middle Welsh -nt →Every word from Hungarian -öl →Every word from Hungarian -d →