when a male and female are performing sexual intercourse.. the femal is on her back with her legs and abdomen high in the air spreading her vaginal region wide open.. the mail can mount her either forward or backward with his rectum aligned with her vagina while he procedes to defocate into her vagina therefore creating a clog and creating the Boston Cläger.
Hey becky! Has Chad ever given you a Boston Cläger? It was so amazing!

Yo steve! I gave Chelsea a Boston Cläger last night bro it was wicked!
by ButtSnorkeler69 December 10, 2018
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