Those three words

[Rapscallion]

There are three three-word phrases that can cause a man to quail and tremble.

1 - "I love you." The old favourite. Land speed records have been broken as a result of this classic.

2 - "Can I watch?" A chum of mine is quite happy to announce when he's going to the toilet. I have turned stomachs with this one.

3 - "Is it in?" No comment.

Rapscallion

[Gawdzillers]

what about "Honey, I'm home?"

[Acolyte]

And, of course, those three little words men find so hard to say,
'I don't know'

[CaroPhoenix]

Here's one even harder for men to say:

"I need directions."

[draftermatt]

An aside to number 3. "Stick it in"

[Gawdzillers]

Here's a four-worder:
"Whose bra is this?"

[hecubus]

And the three words that will clear out a mens' room in 4.8 seconds:
"Whoa, nice d*ck!"

[Spiffy McMoron]

And the three words that will clear out a mens' room in 4.8 seconds:
"Whoa, nice d*ck!"

OR:

"You work out?"

[Sandman]

here's a two worder that would scare any guy who is cheating on their wife

"I'm pregnant"

[MadMike]

here's a two worder that would scare any guy who is cheating on their wife

"I'm pregnant"

Along those same lines...

What's the definition of a "rotten prick?"

A guy who doesn't tell his wife he's sterile until after she's pregnant.