Innuendos You Nearly Missed

I always found the phrase "ticket to ride" interesting.  There has long
been discussion about the "ride" originally referring to "Ryde" -- a
town in the Isle of Wight.
However, according to various Youtube commentators, the "ride" is a pun
which also refers to sex.  And the "ticket" refers to a certificate
German streetwalkers were given upon being tested for STDs and being
found disease-free.
I buy it.  It sounds like a Lennonesque pun.