99.1k views
1 vote
Explain the pun: Biking without a helmet is a no brainer

User Drammock
by
8.0k points

2 Answers

5 votes
I believe it means that if you fall without a helmet on, you could concuss yourself or cause other damage to your brain. Not entirely sure though!
User Tim Vermeulen
by
8.6k points
2 votes
the joke is that if your ride without a helmet you can fall and your brains would *coughs* fall out... So umm... yeah
User Harold Javier
by
7.8k points

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