look up any word, like fleek:

1 definition by Slamhammer

The unbilievable orgasm you get while having sex or while getting Fingered with someone with the name mathew, (Mathewasms may last up to 100 days) is said to me better than all drugs in the world
Girl: I had the Best mathewasm it lasted 74 days!
by Slamhammer November 10, 2010