They stood looking into one another's eyes, their thoughts all on the wazoo.
In the days that followed all England was thrilled to its base as the news spread that the wazoo might rise at any moment.
She sat down and waited among the begonias, her mind still on the wazoo, her whole intense nature strung to the highest pitch.
The buttocks; anus; ass
[1970s+; perhaps a variant of kazoo]