Wizpoopin 

When one successfully performs a #1/Kalifa and #2/Wiz simultaneously or in the same toilet seating session.

"Sorry, I missed you when you called. I was wizpoopin."

Wizpoopin by The Master Wisdom November 17, 2010

whizpoopin' 

When one successfully performs a #1 and #2 simultaneously or in the same toilet seating session.

"Sorry, I missed you when you called. I was whizpoopin'."

whizpoopin' by Elizabeth Cramer November 15, 2006