IHACOAP Share definition Flag Acronym for "I have a concept of a plan" pronounced "I-HA-COAP". IHACOAP is meant as a negative response to someone's Idea, plan, or opportunity is not fully understood by them. He's IHACOAP on building that house with no skills. IHACOAP by Netvetter January 16, 2025 0 0 Get merch Get the IHACOAP mug. Buy Now — $32.95 See more merch