375
A priest, a pastor, and a rabbit entered a clinic to donate blood
(sh.itjust.works)
Description
This is a community for sharing those cheesy “dad” jokes that invoke an eye roll or chuckle.
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Norway does a weird mix
Denmark uses zero
Haven't bothered looking up the rest of Europe, but the links to other languages on https://en.m.wikipedia.org/wiki/ABO_blood_group_system are a mix of both O and 0.