While your having sex, you slip a cigar into your partner's ass, and then when you are all finished with your
session, you
light the cigar up and smoke it.
You give someone the Castro.
You can also get Castroed.
see also the
Chong
Guy 1: While I was
fucking my girl last night, I noticed a cigar on the night stand so I gave her the Castro.
Guy
2: you gave her the ole Castro? That's
fucking tight!