They could have a Strong Island ghetto fabulous version of the tee that could read:
"I'm proof that my Mom likes her ass tore up!"
Or, a west coast flavor (a la Snoop) version of the same tee:
"I'm proof that my Mom likes to get shizzie with the nizzie!"
Or, maybe this version to really make people think:
"I'm proof that my Mom likes Daddy to bust a double horizontal on her ass!"
And another thing, isn't a baby proof that the baby's father also likes to bone? I know I do and I have no children yet that I am aware of.