The most noticeable side effect is that when Covid went through my house, two of us didn't get it (never had symptoms, never tested positive, tested frequently), and the two that did had very mild cases.
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RT @kevinwitvliet00
What horrific side effects have you suffered from the Vaccine?
https://twitter.com/kevinwitvliet00/status/1618269067206619137

Typical UK TV comedian career projection:
1."Thank you, Apollo! I've been Ken Blup, good night!"
2. Ken Blup: "Poop?" QI klaxon sounds.
3. 'Bluppers'. Netflix standup special.
4. 'Blup's Travels around Wales'. Ch5 series
5. Autobiog: 'Travels around Blup'.
6. I'm a Celeb.
7. Blup becomes ambassador for similarly-named Blup's Syndrome (BS) charity.
8. Blup receives MBE
9. Celebrity Pointless
10. Blup tweets something racist
11. MBE withdrawn
12. Ken contracts Blup's Syndrome
13. MBE reinstated