A dictionary of Confusable Phrases: More Than 10,000 Idioms and Collocations

walk heavily • walk heavy
walk heavily —trudge wearily; move with difficulty (as from
fatigue): She went down to the lines, walking heavily with her
washing-basket full.
walk heavy —(U.S. sl.) conduct oneself with an air of impor-
tance: Harry’s been walking heavy since he graduated.
walk in on someone • walk into someone
walk in on someone —interrupt a person by entering a place:
I couldn’t think of anything else to do. I was almost relieved
when Hamilton walked in on me.
walk into someone —run into a person; collide with smb.:
I’m British enough to abjectly apologize every time someone
walks into me.
walk one’s chalks • walk the chalk
walk one’s chalks —(dated sl.) 
1
. make off; escape: We cannot
believe that Brother Nicholas walked his chalks with the funds
of the brethren. 2. move off: I gave Master Barlow due warning
… and one fine morning I walked my chalks to try my luck.
I fell in next day with a gentleman’s servant’s place. 3. is used
to rudely tell smb. to go away (and stop being annoying): I
have had enough of you. Walk your chalks!
walk the chalk —(also: walk the chalk line) 
1
. walk along a
straight line as a proof of being sober: “See? I’m not drunk,”
Chris said as he walked the chalk line. “Okay, you can stop
now,” the cop replied, keeping a stern face. 2. act exactly as
one is supposed to; behave with propriety: The owners of
those dives knew they would have to close up shop and walk
the chalk once the police took the matter in hand.
walk out of something • walk out on something
walk out of something —leave a conference, hearing, etc. sud-
denly (to show one’s opposition, etc.): He walked out of the
meeting because he was extremely angry, and he didn’t want
to say something he would regret.
walk out on something —
1
. fail to fulfill an agreement, prom-
ises, etc.: It remains to be seen if any of the lawmakers who
walked out on their responsibilities will pay the price at the
polls. 2. = walk out of something: Baker told the ministers as
much; then, just to make sure they understood how commit-
ted she was, she walked out on the meeting.
See also: come out of something / go out of something.