The Ultimate high five is where two men are doing two girls doggie style and the two girls are making out, then the two guys high five over the two girls.
by Jonny Rage October 12, 2011
So you and your friend got really shitfaced at this girls/guys house and they end up screwing you and your friend (a threesome) at the same time and to celebrate you high five your friend. ULTIMATE HIGH FIVE!!
by Gerald cuntzton November 10, 2007