The act of when a young boy, that is currently in a relationship, travels to foreign lands and get laid with some foreign
pussy.
This usually happens when there is an ongoing relationship and one partner travels, typically the
male. This couple is then involved in limited communication and conversation resulting in a
natural breakdown. This is due to the partner 'Londoning' without his significant other's consent which will eventually lead to breakup but pure satisfaction for the 'Londoner.'
Oh, look there's John. He just broke up with
Margot since he Londoned without her consent.
I feel
bad for Scarlett. I heard that her
boyfriend was Londoning on her.