blumpcus Share definition Flag to give a guy a blowjob while hes taking a shit on a toilet, ground etc last night she was guna give me a blowjob but i had to take a shit and she couldnt wait so she she gave me blumpcus instead blumpcus by lalec May 25, 2008 0 0 Get merch Get the blumpcus mug. Buy Now — $32.95 See more merch