My friend tricked me - I drink glass with lot of cum

My best friend suggested playing a guess the taste game and blatantly played a prank on me. I closed my eyes, and he replaced the tube with another one in the shape of a dick. At the end of the game, instead of a drink, he gave me a full glass of his cum and I drank it in one gulp. I was very surprised, but I did not expect that the sperm was so delicious and I sucked the last of the cum out of his already fallen dick.