1 definition by your mom sucks me hard

1. Using one's mouth to precisely transfer liquids using a pipette.

2. A very accurate but Darwinistic way of measuring liquids due to the possibility of swallowing chemicals.
Bob was the most precise lab tech around because of his controversial use of mouth pipetting. Unfortunately this is now on his tombstone because the retard drank acid.
by your mom sucks me hard September 1, 2009
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