I forgot to duck

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi Everyone,
‘Honey, I forgot to duck’ - President Reagan to his wife after being shot.
What does this sentence mean here?
Thanks in advance
Ayman

2

oxforddictionaries.com/definition/duck–2 sense 1

3

Thank you Dozy.

4

thank you v much Ayman & Dozy