STUDENT WORK

Here, edit this sentence I found in some student work:

"The food that is crossed with genetics those causing a fear those food allergies from foods that people were usually not allergic too."

Seriously, help me out because I have no fucking clue where to start.

DEAR SON:

When you were just a baby, I mean a teeny tiny thing barely three weeks old, your father and I used to call you "Poop Master" and sing songs about you to the tune of Matchmaker Matchmaker Make Me A Match from Fiddler on the Roof.