Aplast Share definition Flag To not give someone their space. To be on top of someone constantly. Can be used to mean hug or kiss. "Roberta can you please get off of me I am not in the mood to aplast!" Aplast by Mrsssswaycliumbermanidxx January 22, 2016 0 0 Get merch Get the Aplast mug. Buy Now — $32.95 See more merch