1 definition by YBqwerty

Top Definition
MakeUp Sex - the act of having sex after a lovers' quarrel.
Jenny: Why are you glowing so early in the morning?
Sandy: Mike & I almost broke up yesterday; But then we had M.U.S. all night long... (all night...)

or as a verb:
Sandy: ... But then we M.U.S'd all night long...
by YBqwerty April 14, 2008

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