With some people you're never quite sure whether they're making an intentional pun or whether the malapropisms that spring from their mouths are unconsciously loosed.
Here's a couple, from two different women in the office I'm temporarily working in:
one, when she was talking about something medical, said, 'It would probably be scourged from my system.' Ouch.
The other, when knowing something she wouldn't normally be expected to know, has said, more than once, 'I must be psychiatric.'