Shoots Like an Arrow
It comes out as quickly as an arrow from a bow (in the original: a designation for someone whose semen is released with normal force at the time of ejaculation).
("We are concerned lest [pregnancy occurred] in the bathhouse"—and Samuel said: "Any emission of semen that does not shoot like an arrow does not impregnate!" — Ḥagigah 15a, and likewise: "Bowshots"—two thrusts; this is the language of shooting an arrow. In the language of the Mishnah, he struck his wife, so named because the semen shoots like an arrow" — Rashi on Genesis 21:16, and likewise: "An added virtue is known about Baruch's bottle, that he shoots from it like an arrow" — Shalom Aleichem, The Drink of My Brother Eliyahu, soda.)
Translation
Expression (Hebrew)
יוֹרֶה כְּחֵץ
Definition (Hebrew)
יוֹצֵא בִּמְהִירוּת כְּחֵץ מִקֶּשֶׁת (בַּמָּקוֹר: כִּינּוּי לְמִי שֶׁבִּשְׁעַת בִּיאָה זַרְעוֹ נִפְלָט בְּחָזְקָה הַנּוֹרְמָלִית).
("וְחָיְשִׁינַן שֶׁמָּא בְּאַמְבָּטִי עִבְּרָה- וְהָאמֶר שְׁמוּאֵל: כָּל שִׁכְבַת זֶרַע שֶׁאֵינוֹ יוֹרֶה כְּחֵץ אֵינוֹ מַזְרַעַת! "-חֲגִיגָה טוּ ע"א, וְכֵן:"כִּמְטַחֲוֵי קֶשֶׁת- כִּשְׁתֵּי טִיחוֹת וְהוּא לְשׁוֹן יְרִיַּת חֵץ, בִּלְשׁוֹן מִשְׁנָה שֶׁהֵטִיחַ בְאִשְׁתּוֹ, עַל שֵׁם שֶׁהַזֶּרַע יוֹרֶה כַּחֵץ"- רָשִׁ"י בְּרֵאשִׁית כא טז, וְכֵן:"מַעֲלָה יְתֵרָה נוֹדַעַת לְקִבְסוֹ שֶׁל בָּרוּךְ, שֶׁיּוֹרֶה הוּא מִן הַבַּקְבּוּק כְּחֵץ"-שָׁלוֹם עֲלֵיכֶם/ הַמַּשְׁקֶה שֶׁל אָחִי אֵלִיָּהוּ, סַד)