Ukrainian wartime humour

I'm sorry to whoever I might offend in advance.

War always births great jokes and anecdotes. Humour, often very dark humour, is how people cope with atrocities.

I'm looking to compile some of those for an Eastern Europe based media outlet. Are there any Ukrainians in here, who have a war joke they wouldn't mind sharing (and perhaps give me their thoughts on humour being used as a coping mechanism at a time like this)?