The tag implication #67331 blumpkin -> fellatio has been approved.
Reason: What else should blumpkin implicate? All I know is that in order for the fellatio to be a blumpkin, the character being sucked off is either sitting on the toilet or pooping anywhere.
EDIT: The tag implication blumpkin -> fellatio (forum #448274) has been approved by @spe.
Updated by auto moderator