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1. The act of placing one's thumb against one's palm for the purpose of conveying scriptural truths to primary learners.

2. A particularly nasty racial slur.
"Acts 20:24; thumbback!"

"Ain't nothin' but a dirty thumbback!"
by DTB1963 July 02, 2013
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Sep 9 Word of the Day
the thing that you don’t have when you’re phones percentage is over 20
phone: why don’t you go to sleep tommy it’s 2 in the morning?
tommy:why don’t you die you dumbazz
by lik_frls_dis.me February 12, 2020
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