Top definition
A massive release of sexual energy when Lucas M enters the room.

Can also happen when his name is mentioned during general conversation, or if he is actually having sex with you.
Ohhhh myyy godddd I just had the most amazing lucasm today.
by Sarah5565 February 25, 2010
Get the mug
Get a Lucasm mug for your mother-in-law Beatrix.
2
The highest level of orgasm made possible by a member of the lucas family.
The girlfriend of Lucas was smiling constantly. She obviously experienced a lucasm.
by Matthew R. Lucas January 07, 2008
Get the mug
Get a lucasm mug for your brother-in-law Manafort.