When a male has an erection, usally in the morining when waking, he takes his penis and folds it back, tucking it up so the boxers elastic waistband keeps it tucked up tightly against his stomach. Thus keeping the erection from being seen.
"Thank god for the tuck and fold cause my friends would of seen my tiny wang"
A clever and polite way of saying (safe for children) that the Texas Longhorns fucking suck. By switching the first letter of each word you can see that the real meaning is Fuck Texas.
When a man tucks his genitalia behind his thighs, as if making a mangina, then proceeds to punch himself in his new-found FUPA, creating the appearance of punching himself in the testicles.
In an attempt to win a bet to punch himself in the testicles, Mike performed the tuck and punch to win the bet unscathed.