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"hhmtpf" is an acronym that stands for "Ha ha man! That's pretty funny!". It was first made famous by D-Trix in his video entitled "Acronyms" on his YouTube channel "theDOMINICshow".
Guy1: "What did the fisherman say to the card magician?"

Guy2: "What?"

Guy1: "Pick a cod, any cod!"

Guy2: "hhmtpf"
by zimbop August 20, 2011