A beam penis is a penis with a girth so thick and length so straight it can be used as a building beam.
Man, that guy gets all the chicks with his beam penis.
by Champions of Phrase-penis October 15, 2014
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I created a small human in a woman's baby chamber using bionic penis beams.
by SirLinnell April 14, 2004
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An erection that manifests suddenly or quickly.
She made my penis beam..
No, I'm not a pervert it's just that you really make my penis beam..
by DDDalso August 24, 2017
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