a erect penis also known as a "boner".
i woke up in the morning with a mean case of cotton mouth, i rolled over to get a drink of water put i couldent reach it because my kick stand was out !!!!
Whilst in the doggy style position with your other, have her lift up one leg so now she has only one leg for support. Now in this position slide one of your feet beside her supporting foot and in one smooth motion sweep her foot out from under her sending her crashing into the floor or head board.
I gave my ex the kick stand last night and it rocked.