An urban slang word which means a distorted, zoomed in or modified version of the "thinking" emoji. Often said or used in a moment which requires deep thought, or just as banter and on random occasions. Normally when said verbally your index and thumb make a shape that resembles a Nike logo and you hold that sign under your chin, as in the original "thinking" emoji.
Person A: taking a shower is just your house pissing on you
Person B: *thonking* woah you right bro
See a stranger baby close by. Greeting the baby hey thonkas saying you are cute. Greeting my family,spouse or friends hey Thonkas saying cute way of saying I care for you alot.