When a male ejaculates and or nuts on a females face after receiving fellatio (aka- Head) on the beach, the male then reaches and grabs a hand full of sand and throws it on the face of the recipient (aka the female) drenched in semen, resulting in a human sandcastle.
While on spring break in Puerto Vallarta, Mexico, Brett gave Erynn a human sandcastle on the beach after a stimulating round of fellatio.
by Mathew25693 February 3, 2008
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