The Rothenburger Is a sexual act involving two people. One person takes a dump between the other person's buttocks and then continues to cum between the other person's buttocks as well. You then have the "buns" "patty" and some mayo
Person#1: Why wouldn't you answer the phone last night dude?
Person#2: It's because I was Rothenburgering your mom.
Person#2: It's because I was Rothenburgering your mom.
by witheld for safety January 31, 2008