Often used for either:

A) a short kiss
B) Used by me (DMK) as a shortened Evil laf
"I am evil MWHA!"
"I love you Mwha"
by dmk July 12, 2003
Matthew: I love you baby...mwha.
Jo-Dee: I love you too...lots!!! Mwha.
by Scandalicious (Jo-Dee) April 30, 2003