by gavin lawson May 07, 2003
by Lloydy February 22, 2005
Sniffing something with one's anus. Place the anus over somebodys face and clench the muscles of the bottom,, the opposite of a fart, thus bumsniffing.
Michael always wanted to bumsniff Merlo, so when the chance came, he bumsniffed him then he had a tashwank to celebrate.
by Pervy P April 28, 2009