to top it all (off)

1. and the worst thing is.

The washing machine flooded, my car broke down, then to top it all off I locked myself out of the house.

2. and the best thing is.

Students get to meet the world's top scientists and researchers, and to top it off, the conference is free.

Related vocabulary: cap something off

• give someone the old heave ho
• give someone the once-over
• give someone the push
• give someone the right of first refusal
• give someone the right to first refusal
• give someone the rough side of tongue
• give someone the rough side of your tongue
• give someone the runaround
• give someone the sack
• give someone the shaft
• give someone the shits
• give someone the shivers
• give someone the slip
• give someone the time of day
• give someone the willies
• give someone the works
• give some stick
• give something a bad name
• give something a free reign
• give something a free rein
• give something a lick and a promise
• give something a miss
• give something a new lease of life
• give something a once-over
• give something a second thought