Top Definition
Refers to the popular group "the Jonas brothers". All 3 of them are a bit ambiguous when it comes to their gender and since a gonad can refer to either a guy or a girls loot, the name is appropriate.
" Man, now i know why those "Gonad Brothers" wear those chastity rings...because they aren't sure which gender to have sex with"
by xlaxz92 October 19, 2009

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