Portuguese slang for an erection, a hard-on. In Brazil, it is also used when you find something or someone particularly exciting and pleasant.
Estava com uma tesão que nem me aguentava. - I had such a hard-on I didn't know what to do with myself.
by kakihara June 21, 2006
to have an urge (usually sexual)
Esto com tesão.
by MarcoPaolo January 05, 2009

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