Refers to partaking in kissing with someone else or
sexy texting with someone.
This phrase is normally said when one person is texting or
talking to someone they want to
get jiggy with.
Can be abreviated to /\ if writing it in a text message.
Pauleen: He text me last night!
Cocker: oh really?!! bit of Muchy Muchy ey ;)
Peggy: yeah
definate Muchy Muchy taking place Pauleen!!