They are both trying to find their X and they don't know Y.
They'll tell you
Doctor responds: "Heavy drug use, ma'am" Widow: "But doctor, my husband didn't use drugs!" Doctor: "I know, but I did"
Finding shoes to go with it.
At the BAAAAH
Because dogs can't whistle. (X-post from r/dadjokes)
X-Men.
They both encourage people who can barely read to try new things.
Every time you try to take inventory, you fall asleep.
They're both usually found with beer and inbred. -&y (written by moi)
You look at your X and try to find out Y
Son: Boys are gathering into our yard! Dad: ...How many boys Son: All of them... Dad: MY MILKSHAKES!
Urine trouble.
I didn't take algebra!