親子かめはめ波
Referred to as the "Parent-Child Kamehameha" in Japanese; so while the English name specifies a gender, it's gender-neutral in its original Japanese, so parodies often run the gamut of all parent-child combinations.

An iconic moment from the end of the Cell Saga in [[Dragon Ball Z]], where [[Son Gohan]], and the soul of his deceased father, [[Son Goku]], combine their powers to fire the [[Kamehameha (dragon ball)|]] that would ultimately defeat [[Perfect Cell]].
father-son kamehameha