Mango Smear
During the act of fallatio, conceal a mango on your person. At climax, withdraw and ejaculate on said mango. Finally, the mango will be squashed into the unsuspecting woman's mouth as the man exclaims "MANGO SMEARED!"
Dave: "dude what did you do last night?"
Gary: "just went to Julie's and gave her a mango smear"
Gary: "just went to Julie's and gave her a mango smear"