For a liquid (actor -um- & theme) to squirt from a small opening, as blood from an artery, saliva spit in a thin stream, milk from a very full breast.
For someone (agent -um-) to squirt a liquid (theme) onto someone, something (loc ref -an) with the use of something that contains liquid with a small opening, as a squirt gun (inst i-, paN-), as described above.
pamutyu'